THE CANADIAN ENTOMOLOGIST. 225 



Pollinose spots separated by a wide interval ; wings smoky- 

 brown Johnsoni, n. sp. 



21. Front shining except on each lower corner 22 



Front having the lower third opaque pollinose miinda, Loew. 



2 2. Costal cell blackish-gray, veins bordered with brown ,p/atauca/a,Loew. 



Costal cell hyaline, veins not bordered 23 



23. Pollinose spots on lower corners of the front contiguous . . notata,W\ed. 



Pollinose spots separated by a wide interval. . haemorrhoidaiis, Macq. 



Psilocephala festina, n. sp. — £ Black, the abdomen brownish, the 

 tibiae and base of tarsi yellow. Front and face silvery-white pollinose, 

 eyes narrowly separated by a white pollinose interval j first antennal joint 

 two-thirds as long as the third, style slender, cylindrical, nearly half as 

 long as the third joint, the latter one and one-fourth times as wide as the 

 second joint ; bristles of antennae and of upper part of occiput black, 

 pile of lower .part of occiput and of the mouth parts white. Thorax 

 lightly white pollinose and with three grayish-black vittoe, pile very short, 

 mixed white and black, bristles black, pleura and scutellum white 

 pollinose, scutellum bearing only two bristles. Abdomen wholly silvery- 

 white pollinose and sparse white pilose, that on the hypopygium and on 

 the fourth and following segments of the venter largely black ; wings 

 hyaline, apex of subcostal cell yellowish, fourth posterior cell broadly 

 open. 



9 Same as the .' , except : b'ront grayish white pollinose. Abdomen 

 shining, except a white pollinose spot on each side ol the first lifth and 

 sixth .segments and a uoooband on the po.^leiior margin of the second and 

 third segments. Length, 6 to 7 mm. Florida (Johnson). 



Psilocephala morata, n. sp. — <$ Same as festina, with these exceptions : 

 Palpi, knob of halteres and hypopygium yellow ; upper third of the front 

 brown pollinose, eyes not separated by a white interval ; first antennal 

 joint nearly as long as the third, the latter nearly twice as wide as the 

 second. Thorax opaque, grayish-black pollinose. Scutellum bearing 

 four bristles. Pile of entire venter white. 



¥ Same as the $ , except : Lower third of front white pollinose, the 

 remaining portion blackish brown pollinose. Abdomen shining black, 

 first segment and posterior margins of the second, third, fifth and sixth 

 segments white pollinose, the narrow hind margins of the first three seg- 

 ments white ; sparse pile of abdomen and venter largely black, except 

 that of the first segment, which is light-coloured. Wings grayish- hyaline, 



