132 Journal New York Entomological Society. [Voi. xn. 



Cerceris nasica, new species. 



9. Length about 14^ mm.; black, dull yellow, and ferruginous ; pubescence 

 short and erect, rather abundant, distinctly golden on head and thorax ; punctures 

 throughout dense and coarse. Head with broad cheeks and vertex ; facial quadrangle 

 approximately square ; clypeus with a very large projecting process, strongly convex 

 above in a transverse direction, with the anterior corners (forming somewhat less 

 than right angles) directed downwards ; clypeus yellow, with the anterior margin of 

 the process, and a shining concave area on the middle of the anterior margin (be- 

 neath the process), ferruginous ; mandible yellow, with the apical two fifths black, 

 the junction of the two colors ferruginous ; lateral face-marks yellow and very broad, 

 touching antennal sockets and ending in ferruginous wedge-shaped marks at the top 

 of the eyes ; yellow supraclypeal mark triangular, sending a process up each side of 

 the sharp carina between the antennre ; front black, red between the ocelli ; vertex 

 and cheeks red, the latter with a yellowish spot on the upper part ; flagellum red, 

 with about the apical half, except the tip, black ; thorax black, the coarse punctures 

 often confluent ; upper boarder of prothorax broadly yellow suffused with red ; 

 tubercles black, with a faint reddish spot ; scutellum red ; postscutellum yellow ; 

 enclosure of metathorax triangular and well-defined, strongly longitudinally ridged ; 

 tegulse deep yellow, shining ; wings fuliginous, stigma ferruginous, nervures mostly 

 fuscous ; legs yellow, strongly suffused with ferruginous, cox£e partly black ; abdomen 

 with the nodose first segment red, the others yellow, with a black band at the ex- 

 treme base of the second to fifth ; pygidial area parallel-sided, transversely corru- 

 gated, ferruginous with the tip black. 



Habitat. — New Mexico (F. H. Snow). Exact locality and date 

 unknown. 



Cerceris fidelis, new species. 



9 . Length about 18 mm.; similar to C. nasica, 'but easily distinguished by the 

 clypeal process being comparatively very short ; the enclosure of metathorax without 

 longitudinal ridges, but with a slight median groove, and an oblique row of punc- 

 tures on each side ; and the sides of the metathorax almost entirely yellow, the yellow 

 suffused with red along the edges. Other differences are as follows ; size larger ; an- 

 terior middle of clypeus with a transverse blackish groove instead of a shining area ; 

 no red between ocelli ; yellow of lateral face marks extending up on to vertex ; 

 mesothorax slightly marked with red posteriorly ; tegulee red with a suffused yellow 

 mark ; wings not so dark except on apical margins ; basal nervure falling consider- 

 ably short of transverse medial (in nasica it nearly meets it); femora red, hind femora 

 yellow in front ; first abdominal segment yellow like the rest ; ventral surface of 

 abdomen mainly red ; pygidial area evenly rugose, with a strong fringe of pale 

 golden hairs on each side. The flagellum is longer in fidelis than in nasica, and only 

 red basally. 



Habitat. — Santa Fe, N. M. (Cockerell, 1336). Taken July 7. 

 Mr. Fox had recognized it years ago (in litt. ) as an apparently new 

 species, near C. iiiimica. 



