156 MEMOIRS ON THE COLEOPTERA. 



Colpodota acutella n. sp. Slender, fusoid, moderately convex, slightly 

 shining, the punctures everywhere very close and strongly asperate, as much 

 so on the head as on the pronotum, the abdomen smoother and feebly punc- 

 tulate, the elytra dull; color blacker feebly picescent, the elytra dark, the legs 

 pale, brown; head convex, nearly as long as wide, orbicular, the eyes rather 

 large, at one-half their own length from the base, the tempora not so prom- 

 inent and arcuately converging; antennae rather long and notably heavy, 

 gradually and moderately incrassate, black throughout, the first three 

 joints of about equal length, the first the thickest, the outer joints slightly 

 transverse, the last pointed, as long as the two preceding; prothorax only 

 about a third wider than long, subparallel, with broadly arcuate sides, much 

 wider than the head and scarcely so wide as the elytral base, not evidently 

 impressed; elytra notably short, with slightly diverging sides, the suture 

 four-fifths as long as the prothorax; abdomen at base slightly narrower than 

 the elytra, gradually and strongly tapering to the decidedly acute apex, 

 the fifth tergite only very little longer than the fourth. Length 1.8 mm.; 

 width 0.38 mm. New York (Catskill Mts.). 



Differs in its still more slender form, less sharply acuminate 

 abdomen, unusually feebly transverse prothorax and short elytra. 

 The following appears to be a subspecies of acutella: 



Colpodota simulata n. subsp. Similar to acutella in form, coloration and 

 sculpture but rather more shining, the head relatively a little larger, with 

 the short tempora behind the eyes parallel and not arcuately converging, 

 the head convex and similarly nearly as long as wide; antennae a little shorter 

 and less heavy; prothorax a little more transverse and fully as wide as the 

 elytral base; elytral suture not obviously shorter than the prothorax. Length 

 1.73 mm.; width 0.34 mm. Missouri (St. Louis). 



The differences are slight but in numerous directions, so that this 

 form should be made known, at any rate as a subspecies. 



Colpodota egregiella n. sp. In outline nearly as in the preceding but. 

 with the punctures still closer, though much finer, fine and much feebler 

 on the head and abdomen; color piceous-black, the head and abdomen black, 

 the latter pale at the extreme tip, the elytra dark brown, blackish about 

 the scutellum, the legs pale; head nearly as long as wide, the eyes not quite 

 so large, at nearly their own length from the base, the tempora less prom- 

 inent and gradually arcuato-converging basally; antennae not quite so long 

 and much more slender, barely visibly incrassate, piceous in color, the second 

 joint longer than the third, the fourth evidently longer than wide, the outer 

 joints only very little wider than long, the last pointed and as long as the 

 two preceding; prothorax very moderately transverse, subparallel, with 

 strongly rounded sides, much wider than the head and equal in width to 

 the elytra, with a very small and feeble impression on the median line at 

 base; elytra subparallel, only moderately transverse, the suture very evi- 

 dently though slightly longer than the prothorax; abdomen throughout 

 nearly as in the preceding. Length 1.7 mm.; width 0.35 mm. New York 

 (Catskill Mts. and Ithaca). 



