230 THE CANADIAN ENTOMOLOGIST 



the type of Echinaphis rohweri is an elongated, minutely reticulated 

 object 690 microns long, shaped like the egg of Aedes grossbecki, 

 but broader, with the reticulations considerably more minute and 

 rather transverse than longitudinal, in the manner of Aedes colopus. 

 It is, I think, a mosquito egg, and is the first fossil from Florissant 

 I have been able to refer to the Culicidse. 



DiPTERA. 



Asiliis peritulus Cockerell. 



Two wings from Station 14 (Geo. N. Rohwer). 

 Verrallites, new genus (Bombyliida?). 



A genus of slender-bodied Bombyliida?, with clavate but not 

 much elongated abdomen, characterized especially by the anal cell 

 being very widely open, its width on margin in the typical species 

 720 microns, which is a slight fraction more than the width of the 

 third position cell on the margin. Head and thorax apparently 

 bare; abdomen sparsely minutely hairy; costa minutely bristly; 

 auxiliary vein longitudinal, reaching costa near (apparently a little 

 before) middle of wing (practically as in Lordotus) ; marginal cell 

 long and narrow, its lower side gently concave, its apex broadly 

 rounded, the second vein turned basad before reaching the costa 

 (the cell practically as in Lomatia lateralis, except that the outer 

 angle with costa is more acute in the fossil) ; two submarginal cells 

 the second elongate, widened apically (about as in Phthiria pulicaria 

 except that the upper nervure curves upwards apically, more as in 

 Geron) ; four posterior cells, the first nearly parallel-sided throughout 

 (in the manner of Phthiria), the others widely open, the third very 

 broadly open (much as in Ploas virescens, only much longer) ; fourth 

 posterior narrowed basally and extremely widely open apically 

 (Phthiria-style, only more elongated); anterior cross-vein far be- 

 yond middle of discal cell, beyond the beginning of its last third. 



Verrallites claduriis, n. sp. 



Length, about 7 mm., with the abdom.en gently curved; abdo- 

 men with a depth of 2 mm. near apex; wings 5.75 mm. long. Head 

 and thorax probably black in life; abdomen apparently brown, the 

 sutures broadly colourless;, wings clear hyaline. 



Miocene shales of Florissant, Colorado, Station 13 B (Univ. 

 of Colorado Exped.) 



