6 MEMOIRS ox THE COLEOPTERA. 



Resembles affluent very much but distinguishable by the some- 

 what larger head, shorter last antennal joint and slight differences 

 in the male sexual characters. 



Atheta (Stethusa) galvestonica n. sp. General form, coloration and sculp- 

 ture as in klimschi, the punctuation not quite so dense and the lustre more 

 shining, the prothorax shorter, more transverse and paler in color; head 

 well developed, the eyes large but separated from the base by fully two-fifths 

 of their own length, the antennae more slender, very moderately incrassate, 

 with the outer joints nearly as long as wide; prothorax rather more than 

 one-half wider than long, the basal impression feeble; elytra rather short 

 and transverse, the suture not distinctly longer than the prothorax; abdomen 

 as in klimschi; mesosternal process unusually broad, rounded at tip, which 

 is separated from the triangular metasternal projection by but little more 

 than its own subapical width. Length 2.3-2.5 mm.; width 0.65-0.7 mm. 

 Texas (Galveston). 



Though represented at present by the female only, this species 

 can be distinguished readily from any other by the very wide 

 mesosternal process even for the present genus, and the eyes, which 

 are not quite so large as usual. 



Atheta (Stethusa) texana n. sp. Of the usual coloration and rather stout 

 form, the head well developed, with the eyes not quite so large as usual and 

 decidedly more prominent; antenna; rather rapidly though moderately in- 

 crassate, the outer joints evidently though not greatly wider than long; 

 prothorax not densely punctate, strongly transverse, strongly rounded at 

 the sides, nearly as wide as the elytra, feebly impressed medially except in 

 apical third ; elytra large, wider than long, with the suture much longer than 

 the prothorax and similarly rather shining, with the distinct asperate punc- 

 tures not very dense; abdomen as in klimschi and galvestonica; mesosternal 

 process extending to apical fourth of the coxae, moderately wide, rounded 

 at tip and separated by only its own width from the large triangular meta- 

 sternal projection. Length 2.6 mm.; width 0.75 mm. Texas (Austin). 



Also represented by the female but to be known readily by the 

 more prominent eyes, which are decidedly smaller than usual, al- 

 though much larger than in Atheta, and by the shorter and more 

 transverse prothorax. 



Atheta (Stethusa) canonica n. sp. Very similar throughout in form, color- 

 ation and sculpture to affluent but a little smaller and less stout, the head 

 just visibly larger and with the similarly large eyes slightly less convex; pro- 

 thorax almost similar but rather shorter, more impressed along the median 

 line posteriorly; elytra similar but shorter, strongly transverse; abdomen 

 with thinner and deeper side margins, paler basalt}- and at apex, the sixth 

 tergite (cf) with the truncate median part at apex not projecting behind 

 the lateral teeth but very much wider than in aj^wens, being separated from 

 each of the teeth by a space very much narrower than its own width, and 



