168 THE CANADIAN ENTOMOLOGIST. 



about one-fifth width of head ; sides of front, and face silvery-white ; 

 cheeks long and wide, compressed, silvery cinereous behind, pale rufous 

 anteriorly, the under side of head below eyes having a singularly narrowed 

 and elongate apperance in front view ; antennae and arista black, first two 

 antennal joints and base of third light rufous, arista long pubescent ; 

 proboscis blackish, labella light brownish, palpi pale yellowish rufous ; 

 occiput silvery cinereous. Thorax and scutellum silvery cinereous. 

 Abdomen black, silvery cinereous, hind margins of segments usually 

 blackish ; second segment with a median marginal pair of macrochaetae, 

 third with a median discal pair, anal segment armed with discal and mar- 

 ginal macrochaetse and bristles. Legs blackish, front femora slightly 

 silvery cinereous, claws and pulvilli elongate, pulvilli tawny fuscous. 

 Wings grayish-hyaline ; veins blackish, especially cross- veins ; apical 

 cross-vein sinuate, fourth vein bent at an angle with slight stump at bend, 

 hind cross-vein very near to small cross-vein ; tegulse nearly white, 

 halteres yellow. 



Length of body, 4 mm.; of wing, nearly 3^ mm. 



Described from one specimen ; Las Cruces, New Mexico. San 

 Andreas Mts. August 21. 



Rhinophora viexicana, n. sp., $ . 



Eyes light brown or dark brown ; frontal vitta deep blood-rufous, front 

 about two-ninths width of head behind, wider in front, face widening at 

 about same angle .• sides of front, sides of face and facial depression 

 silvery-white, more or less golden on front, the sides of face with some 

 bristles which are longest below, frontal bristles not descending below 

 antennae, no orbital bristles ; cheeks nearly all comprised in the rufous- 

 brown pregenal area, which is always bare ; antennae short, pale rufous or 

 yellow, the third joint almost wholly or only at tip blackish, little longer 

 than second ; arista blackish, pubescent ; proboscis brownish, about as 

 long as height of head, palpi small, yellow ; occiput cinereous, somewhat 

 brassy or golden, black-bristly. Thorax and scutellum silvery-gray 

 poUinose, more or less golden, with four darker vittae interrupted at suture. 

 Abdomen silvery-gray pollinose, more or less distinctly golden, first segment 

 blackish at base ; first segment with a lateral mocrochaeta and bristles ; 

 second with a lateral marginal pair, usually a weaker lateral discal one or 

 two, and a median marginal pair ; third with several lateral discal ones 

 and a more or less complete marginal row ; anal segment with a more or 

 less regular discal and marginal row. Legs black, femora more or less 



