AMERICAN DIPTERA. 283 



Teurulffi and their cilia black. 

 Leugtli 6 mm. 



One male, Chapada, Brazil (Dr. Williston). 



Pi^ilopodiuus crinitus sp. nov. 



Male.— Deep green or blue species, very bright, the bristles of head, thorax, ab- 

 domen, and fore tibise greatly elongated, many of them wavy toward the tips; 

 antennae black, the arista over two-thirds the length of the entire body, whitish 

 at tip; appendages of hypopygium small, blackish; all coxae, trochanters and 

 femora black, tibiae, except the extreme tip of hind ones, yellow; hind tarsi 

 wholly, the others but very slightly, infuscated ; fore and middle tarsi slender, 

 elongated, the fore metatarsus with long cilia above, otherwise the tarsi are of 

 plain structure. Wings hyaline, a faint infuscation on the anterior apical ()art; 

 posterior crossvein very oblique. 



Female.— Arista, slender, about half the length of the body; bristles of poste- 

 rior part of the thorax and seutellum of noticeable length, and those of front and 

 middle tibiae quite strikingly elongated ; fore metatarsus with distinct small bris- 

 tles above ; crossvein less oblique ; otherwise as in male. 



Length 4-4.5 mm. 



Three males, six females, Florida (Lake Worth and Biscayne 

 Bay), Mrs. Slosson ; Fla. and Lawrence, Kans., from the Univ. of 

 Kans. 



This species has a most remarkable resemblance to comatus, under 

 which name I reported it to Mrs. Slosson, but differs in having 

 small, dark (instead of large, pale yellow) appendages to the hypo- 

 pygium, and in the absence of cilia the entire length of the middle 

 tarsus. 



The females of the two species are readily distinguished from all 

 others at present known by the distinct row of hairs or small bris- 

 tles on the upper side of the fore metatarsus; I have been unable to 

 find any distinct character to separate them from each other. 



I'siilopodiiius imperator sp. nov. 



Male. — Face bright metallic, overlaid with silver pollen ; antennae small, 

 brownish black, almost destitute of bristles; front violet, thinly pollinose in a 

 certain light, with pale hairs on the sides. Thorax green, the scutellnni and part 

 before it of a beautiful rosaceous, running into purple; pleurae with pure white 

 pollen ; halteres moderately infuscated ; cilia of tegulae pale on the lower half, 

 blackish above. Abdomen slender, with rather long bristles; the basal three 

 joints conspicuously marked with a non-metallic brown color, the incisures of 

 the following part with moderate black bands; hypopygium small, rounded, 

 brownish black, with two slender, acuminate, brown organs projecting forward ; 

 venter brownish. Middle and hind coxae brown ; fore coxa; and all trochanters, 

 femora and tibiae yellow; hind knees slightly infuscated ; fore tibia with only 

 one or two minute bristles, fore metatarsus much longer than the tibia, with a 

 few minute hairs below ; middle tarsus once and a half as long as the tibia, infus- 

 cated from the middle of the first joint; hind tibia moderately hairy on the inner 

 side, on the outer with two small bristles; hind tarsi infuscated from the base. 



TRANS. AM. ENT. SOC. XXX. OCTOBER. 1904. 



