204 MEMOIRS ON THE COLEOPTERA 



surface with a very feeble transverse impression at some distance before 

 the basal margin; elytra about as long as wide, parallel, with broadly 

 exposed humeri, a fourth v ider and two-thirds longer than the prothorax, 

 the apical sinuses narrow but deep; abdomen parallel, slightly narrower 

 than the elytra, the three basal impressions deep. Length 1.7 mm.; 

 width 0.35 mm. New York (near the city). 



Recognizable by its small size, rather narrow form and relatively 

 feebly developed head and prothorax. The type is a female. 



Eucryptusa immunis n. sp. -Stouter and larger, moderately convex, 

 feebly shining and with strong reticulation anteriorly, the latter ob- 

 solete on the much more shining elytra and abdomen; punctures fine, 

 shallow on the head, granuliform on the prothorax, larger and very 

 strongly asperate as the elytra, fine and asperate on the abdomen, close 

 basally, gradually finer and much sparser posteriorly; color black, the 

 elytra barely at all paler, the legs pale brown; pubescence coarse, palish, 

 not erect; head transverse, almost four-fifths as wide as the prothorax, 

 the eyes moderate, at nearly their own length from the base, the tempora 

 arcuate and converging to the base; antennae black, the two basal joints 

 very pale, a little longer than in the preceding, extending to basal third 

 of the elytra, nearly as in pavida but 1 ss incrassate distally, the tenth 

 joint one-half wider than long, the last slender, acutely and gradually 

 pointed and fully as long as the two preceding, without the transverse 

 corona, the latter also much less defined on all the outer joints; prothorax 

 in outline nearly as in the preceding but larger and less transverse, about 

 one-half wider than long, with the obtuse basal angles blunter and the 

 surface with a large median area toward base which is very feebly im- 

 pressed; elytra quadrate, parallel, nearly as long as wide, a fifth wider 

 and one half longer than the prothorax, the humeri well exposed at base, 

 the apical sinuses broader but shallower than in pavida; abdomen nearly 

 similar. Length 1.9 mm.; width 0.45 mm. Iowa (Cedar Rapids), 

 Brendel. 



Distinguishable at once from the preceding by its larger size, 

 stouter form, relatively much more developed head and prothorax 

 and smaller eyes; it also is described from the female. 



Namila Csy., has a relatively smaller head and larger prothorax 

 than either of the preceding. 



Eucryptusa fragilis n. sp. More slender and parallel, less convex, 

 the reticulation strong on the rather dull anterior parts, feebler but 

 distinct on the moderately shining elytra and abdomen, the punctures 

 fine, granuliform and not dense on the pronotum, slightly asperate 

 but fine and well separated on the elytra and still finer on the abdomen, 

 becoming sparse posteriorly; color piceous-black, the elytra and abdominal 

 tip pale brown, the legs very pale; pubescence moderate, not erect; 

 head wider than long, four-fifths as wide as the prothorax, the eyes 

 notably prominent, at fully their own length from the base, the tempora 



