108 Bulletin of the Brooklyn Entomological Society Vol. XI 



feebly emarginate in hicolor, almost flat intervals and rather 

 feebly impressed striae of elytra. 



Cebrio emarginatus new species. — Dark testaceous, head piceous, pro- 

 thorax dark brown, abdomen, legs and antennae paler. Head moderately 

 densely punctate; labrum deeply triangularly emarginate; mandibles 

 rather short and stout; last joint of maxillary palpi shorter than the 

 preceding; antennae feebly serrate; joints elongate, third joint about twice 

 as long as the second and more than half as long as the fourth. Pro- 

 thorax transverse, hind angles not divergent, sides nearly straight,. narrow- 

 ing to apex; surface somewhat sparsely punctate, punctures moderate. 

 Elytral striae shallow, punctures almost obliterated in about basal half, 

 towards apex more distinct; intervals moderately convex, finely and 

 moderately closely punctulate. Prosternal process between the coxae rela- 

 tively broad and rather suddenly convex. Abdomen finely and sparsely 

 punctate; fifth ventral segment rather deeply emarginate. Length 15.5 

 mm. 



New Mexico (coll. Dietz). 



The prosternal process in this species is rather wider than in 

 hicolor Fab., from which it otherwise differs in having shorter 

 mandibles and a much longer third antennal joint; from mandi- 

 hularis, estriatus and compositus it differs in having a much 

 wider prosternal process. 



A KEY TO THE MALES OF THE ANTHOMYID GENUS 



HYDROT^A RECORDED FROM NORTH AMERICA 



(DIPTERA). 



By J. R. Malloch^ Urbana, 111. 



There js a pronounced dearth of literature in English, upon the 

 North American Anthomyiidse, and remarkably few keys to the 

 species of the various genera in either English or German. The 

 key presented herewith will prove useful to students who either 

 can not obtain access to papers dealing with the species included 

 or may not have time to analyze descriptions in order to discover 

 the distinguishing characters of the species. 



The males of this genus may be readily separated from those 

 of other anthomyid genera by the following combination of char- 

 acters : eyes contiguous or subcontiguous, proboscis fleshy; palpi 



