140 Journal New York Entomological Society. [Voi. x. 



front and hind tibice chiefly black, of the middle tibiae chiefly white and with a fringe 

 of black ones on the outer and inner sides near the base ; hairs and bristles of tarsi 

 sparse, black, a dense patch of loiig white hairs on upper side of first joint of the 

 front ones ; wings hyaline. 



Female. — Differs from the male as follows : Black hairs on sides of front and of 

 face few in number, sixth abdominal segment wholly polished, hairs of middle femora 

 colored like those on the other femora, hairs and bristles of middle tibias chiefly 

 vellow, those on the outer side mostly black, no patch of white hairs on the front 

 tarsi ; length, 12 mm. 



Habitat : Sierra Madre, Chihuahua, Mexico (head of Rio Piedras 

 Verdas, about 7,300 feet elevation). 

 Type: Cat. No. 6314, U. S. N. M. 

 Seven males and three females collected September 17 and iS. 



Family Empid.-e. 

 Sciodromia palliata, sp. nov. 



Head blue-black, eyes narrowly separated on the front, contiguous on the face- 

 antennre brown, proboscis yellow, rigid, nearly as long as height of head, thorax 

 blue-black, mesonotum polished except a shield-shaped, silvery white spot on the 

 posterior end, lower portion of pleura and il^per side of scutellum whitish pruinose, 

 hairs and bristles of thorax black, scutellum bearing four bristles ; abdomen steel, 

 blue, polished, its hairs whitish, genitalia black and with black hairs ; legs yellow, 

 including the coxfe, tarsi becoming brownish toward the apices, outer side of hind 

 tibise bearing many long hairs ; wings hyaline, stigma pale grayish, the upper two 

 veins that issue from the discal cell very faint ; halteres yellow ; length, 2 mm. 



Habitat : Frontera, Tabasco, Mexico. 

 Type: Cat. No. 6315, U. S. N. M. 

 Four males collected February 19. 



Family Dolichopodid/e. 

 Sciapus* breviseta, sp. nov. 



Head green, the hairs white, the bristles above anterior oral margin and on the 

 front black ; front deeply excavated, polished, the lower edge and face rather densely 

 white pruinose, face slightly impressed below the middle, destitute of hairs, antennae 

 black, the third joint dark brown, transversely elliptical, bristles on under side of 

 second joint shorter than greatest diameter of this joint, arista slender, less than half 



* Sciapus Zeller, 1842 [^= Leptopus Fallen, 1823, preoccupied ; = Psilopus Meigen 

 1824, preoccupied ; =r Gnajuptopsilopus Aldrich, 1S93). In the Mon. N. Am. Diptera, 

 II, page 230, Dr. Loew states that all of the European species of Psilopus have the hairs 

 of the calypteres whitish, and the specimens in the U. S. National Museum agree with 

 this statement. It is probable that one of the many names proposed by Bigot will be 

 available for those species in which these hairs are black, but unfortunately he makes 

 no mention of this character and specimens belonging to the type species are not at 

 present accessible to the writer. 



