new species dolichopodid.ze from the duz,

1929] New Species o/ Dolichopodidce ]tom the West Indies 37

NEW SPECIES OF DOLICHOPODID.ZE FROMTHE WEST INDIES,

(DIPTERA).

BY M. C. VAN Duz,Buffalo, N. Y.

Psilopus salti, new species.

Male" length about 5 mm., head broken off in the type.Thorax and abdomen dark green, their bristles short; morethan half of the abdominal segments opaque black, apicalpart of segments and whole of last one green; venter andsides of first segment with long pale hairs. Hypopygium(Fig. 2) small, its lamellm black, ringed with hair and withseveral flattened, clavate bristles on one edge.

Coxm black, anterior pair with rather long yellow hairsat tip; remote green with long white hair below; fore andmiddle tibim yellow, anterior pair with two long bristlesbelow, the one near the middle nearly one-third as long asthe tibia, middle ones with two rather long bristles on loweranterior edge; posterior tibim black; first joint of fore tarsimostly yellow, middle tarsi brown almost to their base, pos-terior pair wholly black; last four joints of ore tarsi withonly short hair below; all tarsi plain, except that the fifthjoint of middle tarsi is nearly as wide as long; length ofore tibiae about as 70, joints of fore tarsi as 50-18-14-8-6;those of middle ones as 65-22-14-6-5; joints of posterior onesas 65-26-15-6-5. Calypters yellowish brown with the tip andcilia black; halteres yellow.

Wings sligthly tinged with brown in ront of secondvein; last section of fourth vein rom the cross-vein to theork 32, from fork to wing margin about 30, cross-vein 31and last section of fifth vein about 27 fiftieths of a milli-meter long; fork of fourth vein almost a right angle, theupper bend broadly rounded.

Described from one male, taken at Mina Carlota, Tri-nidad Mountains, Cuba, March 21, 1925, by George Salt, orwhom the species is named.

Type in the Museum of Comparative Zoology, in Cam-bridge, Mass.

38 Psyche [March

Psilopus albihirtus, new species.

Male" Length 5 mm. Face broad, green with a little whitepollen; palpi black; proboscis brownish yellow; antennseblack, short, longest bristles on second joint above and aslong as the antenna; ront blue-green with a few pale hairson the sides; lower orbital cilia white, not long or abundant.

Thorax and abdomen green; segments of the abdomenbroadly opaque black at base; the white hairs on the venternot very long; bristles o thorax and abdomen short. Hypo-pygium (Fig. 1) black, rather small; its lamellm forked, onebranch fringed with slender hairs, the other branch, whichis cut off straight at tip have a ringe of shorter and stifferhairs at tip.

Coxm black; anterior pair fringed with long, whitishhair on outer surface; emora green with long white hairbelow; tips o fore and middle femora and their tibim yel-low, the latter with rather short bristles; hind tibim black;ore tarsi (Fig. 3) with the first joint yellow, remainingjoints black, second, third and 2ourth joints with bluntspines below, fifth joint short and nearly as wide at tip aslong; middle tarsi brown, posterior pair black, both plain;ore tibim as 72, joints of fore tarsi as 60-17-10-6-4; ofmiddle pair as 67-18-15-6-5; joints o posterior tarsi as 53-18-13-8-5. Calypters brown with black cilia; (halteresbroken off in the type).

Wings grayish, very slightly tinged with brown in frontof third vein; venation about as in salti new species.

Described rom one male, taken near Troy, Jamaica, May23, by A. E. Wight. Type in the Cambridge Museum.The tarsi are ormed very much like those of patbulatus

Say and plicornis Aldrich, but differs from both in havingthe wings without cross-bands and the fore and middle tibisepale yellow, it also differs in other characters. It is verynearly like salti new species, but differs in the form of theore tarsi.

Pelastoneurus furcatus, new species.

Male: length 4 mm. Face and front in the type greasyso I could not tell their color; antennse yellow, third jointsmall, rounded, scarcely as long as wide, apical edge black;

1929] New Species of Dolichopodidce from the West Indies 39

arista inserted at upper basal corner, it is broken off in thetype but still adheres to the head and has several long hairsalong the middle, it might be much more fully feathered ifin perfect condition; lower orbital cilia white.Dorsum of thorax blue on apical half, more coppery along

the front and median line; scutellum reddish coppery with adepressed area on each side of a median ridge, it has onepair of large marginal bristles and a pair of small hairs out-side of them. Abdomen green with black hair and with thehind margins of the segments coppery. Hypopygium (Fig.4) with the upper part black, the lower portion yellow, ithas a short perpendicular segment which is scarcely as longas high, the hypopygium reaches nearly to the second ven-tral segment, its lamelle yellow on basal half, blackish onapical portion, somewhat triangular, or rounded, they havemany slender hairs on apical margin and also several short,bent, flattened, blunt ones; on the lower corner of the hypo-pygium are two long, branch, pale hairs, these are nearly aslong as the lamellm.

All coxm, femora and tibim yellow, outer surface of basalhalf of middle coxm and all tarsi rom the tip of the firstjoint brown; fore coxse with a few black hairs and bristles;joints of fore ta.rsi as 40-25-19-11-10; two first joints ofhind tarsi as 29-40. Calypters and halters yellow, the ciliaof the former appears yellowish.Wings grayish; first vein reaching but little more than

half as far as the cross-vein; third vein nearly straight, lastsection of fourth vein bent near apical third; slightly con-cave posteriorly beyond the bend, its end near the tip ofthird vein; cross-vein 15, last section of fifth vein 23 fiftiethsof a millimeter long.

Described from one male, taken by George Salt, February25, 1925, at Soledod, Cuba. Type in the Museum of Com-parative Zoology, in Cambridge, Mass.

This like neglecta Wheeler, ]asciatus Roeder and wheelriMelander has the hypoygium about half yellow, but it isseparated from these by the form of the hypoygial ap-pendages. Neglectus like this species has a few branchedbristles on the hypopygium, but they are much shorter thanin this form.

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