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Cynorhinella (subfamily Chilosiinae) : head, frontal aspect, 

 distinctly triangular in shape; face without yellow (all species of 

 Cynorhina have the face in part yellow except umhratilis which 

 may more properly be placed in Criorhina because of the dichoptic 

 eyes of the male); face tuberculate in both sexes; lower post- 

 margin of scutellum with fringe of downward-projecting fine 

 hairs; second vein but slightly turned up at its tip and joining 

 costa well beyond middle of the section between the first and 

 third veins; discal cross-vein before middle of discal cell; hind 

 femora greatly enlarged, with a prominent saw-toothed projection 

 on the outer apical end, except in female and possibly the male 

 of the species described below. 



Cynorhinella canadensis Curran differs from hella Williston, as 

 far as the description indicates, in having a small anterior tooth 

 on the hind femora (absent in hella) and by having the front, face 

 and legs chestnut brown (these are for the most part black in 

 hella) . 



Cynorhinella longinasus, new species. 



9 . — Face considerably produced downward, giving the head, frontal aspect, 

 a triangular shape; front shining black, longer than broad, gradually widening 

 downward; antennae moderate, first joint dark brown, second yellow, third 

 narrowly yellow at base, remainder slightly brownish; arista brownish on basal 

 third, whitish beyond, somewhat thickened basally, a little longer than an- 

 tenna, and somewhat shorter than front measured across base of antennae; 

 face shining black, a very faint light pollinose band extending across below 

 antennae, a few fine hairs along eye margins and lower oral margins; face 

 unusually produced downward, pointed, much longer than broad, nearly 

 straight from antennae to front oral margin with small tubercle located at 

 middle. Mesonotum shining black with two faint longitudinal vittae and 

 scattered short pale pile; scutellum broader than long, faintly marginate, with 

 downward-projecting hairs on lower post-margin. Legs black, knees pale; 

 hind femora but little thickened with a very slight indication of a prominence 

 on lower apical end which is marked by small black spines; metasternum 

 pubescent. Abdomen shining, with scattered pale pile. Wings smoky; 

 apical cross-vein forming an acute angle with third vein, the petiole beyond 

 much shorter than length of discal cross-vein; tip of second vein very slightly 

 turned upward and joins costa noticeably beyond middle of the section be- 

 tween tips of first and third veins. Squamae white, halteres faintly yellow. 

 Length 5.5 mm.; wing 5.25 mm. 



Holotype, female, Jaffrey, New Hampshire, June 6, 1920 

 (C. W. Johnson); in collection of Boston Society of Natural 

 History. 



Remarks. — ^This differs from hella notably in size, being about 

 one-half as large; in color of arista; more elongated face and 

 shorter and broader fifth posterior cell; and absence of femoral 

 tooth. 



