108 Journal New York Entomological Society. [Voi. vni. 



of Zimmermann, is omitted from the Henshaw list. The crxptopJiaga 

 of Rietter, I have been unable to identify. 



Atomakiini. 

 The Atomariini constitute by far the larger part of the subfamily, and 

 comprise several genera in America. The body is much smaller 

 throughout than in the preceding tribe and seldom or never surpasses 

 2 mm. in length. The genera before me may be briefly defined as 

 follows : — 



Elytra not margined at base ; body always pubescent, the antenna; separated at base 

 by a third of the width of tlie head or less 2 



Elytra marghied at base ; antennne separated at base by nearly half the entire width of 

 the head, though purely frontal as usual ; body minute in size and virtually glab- 

 rous 3 



2 — Body elongate and parallel in form, less convex, the prothorax angulate and foveate 

 at the lateral edges far behind the middle ; antennre very approximate at base, with 

 the basal joint obconical and feebly arcuate ; first ventral segment behind the 

 coxce not as long as the next two combined ; prosternal process narrow. 



Agathengis 



Body oval, more convex, the prothorax rounded or angulate at or before the middle, 

 and generally having the minute fovea, in the edge at the point of angulation, less 

 developed than in Agatheugis ; antenna less approximate at base, the basal joint 

 shorter and oblong ; first ventral segment behind the coxa; as long as the next 

 two, the posterior segments shorter ; prosternal process generally narrow and not 

 prominent but becoming broader and more prominent in certain aberrent European 

 forms, such as cephcnnioides Atomaria 



3 — Body oblong-oval, strongly convex, the prothorax rounded at the sides from above 

 and not angulate, the edge minutely beaded and not foveate ; first ventral as long 

 as the next three combined, with a short feeble plate behind the inner part of the 

 coxpe, becoming obsolete externally and gradually confounded with the coxal 

 margin, the posterior segments short ; prosternal process very wide, with acute 

 lateral edges not attaining the apical margin, nearly as in Ephiste»i!{s...TlSSiCt\a. 



The last of these genera is evidently a transition toward the Ephiste- 

 mini in some respects, but the sciitellum is broadly oval as in the 

 others, the body more loosely connected and the prosternal process 

 evidently free and broadly, arcuately obtuse at tip. The basal margin 

 of the elytra will isolate it at once from any other member of the sub- 

 family known to me, causing it to bear somewhat the same relation- 

 ship to the others, in that respect, as Toinanis, does in the Cryp- 

 tophaginae. 



Agathengis Gozis. 



This aggregate of species, usually treated as a subgenus of ^Av//(?;7'rr, 

 satisfies the ordinary definition of a genus in having several constant 



