STAPHYLINID^;. 175 



with rather thick margins, the fifth tergite much longer than the fourth; 

 male with the inner apical angles of the elytra tuberculate, the second tergite 

 with two short, very approximate carinae at the middle, extending to the 

 hind margin, the fifth with a high acute keel-like tubercle, angulate in profile 

 and extending to the apex but not to the base, the sixth with a shallow apical 

 sinus but not modified on the disk. Length 2.2-2.5 mm.; width 0.65-0.78 

 mm. Texas (Brownsville), Wickham. 



To be known at once from ochracea by its smaller size and much 

 shorter elytra. The short carinae of the second male tergite are 

 inconstant, sometimes being much reduced in size as is the case 

 with the tubercular modification of this tergite throughout the 

 genus. 



Hoplandria arizonica n. sp. Larger and stouter than the preceding, nearly 

 similar in the coloration, lustre and punctuation; head rather more trans- 

 verse, the eyes similarly large and at a short distance from the base; antennae 

 with the outer six joints abruptly larger, very stout and black, the basal 

 part much more slender and testaceous, the three basal joints similar, the 

 fourth more transversely oval, the fifth transverse but, as in texana, much 

 smaller than the sixth; prothorax similar but not quite so short, visibly 

 less than twice as wide as long and not quite as wide as the elytral base; 

 elytral suture equal in length to the prothorax; abdomen similar. Length 

 2.75 mm.; width 0.75-0.88 mm. Arizona (Tugson). 



Differs from texana in its larger size and stouter form, but, as 

 usual, the male is stouter and more fusoid than the female, though 

 there is little or no sexual difference in sculpture. The carinae of 

 the male abdomen are feebler and smaller than in texana, but this 

 may be an individual character in the only male before me. The 

 outer six antennal joints are much stouter in arizonica than in 

 texana. 



Hoplandria carinata n. sp. Form much narrower and more parallel than 

 in the preceding species, pale testaceous, the head and abdomen piceous- 

 black, the latter dark testaceous basally and at tip, the elytra infumate 

 along the flanks and in a small scutellar region, the legs pale; head nearly 

 as in the preceding species, the eyes large and prominent; antennae longer, 

 similar in coloration and general structure but with the fourth joint cylindric 

 and as long as wide, the fifth distinctly transverse though not so strongly, 

 the club formed by the outer six joints less distally incrassate and more 

 parallel; prothorax as in ochracea but not quite so transverse, evidently 

 less than twice as wide as long, narrowed and with rounded sides from the 

 strongly rounded base to the apex, barely as wide as the elytral base; elytra 

 shorter, the suture only very little longer than the prothorax, the inner apical 

 angles strongly tuberculate in the male; abdomen as in the preceding species, 

 except that in the male the two short carinae of the second tergite are replaced 



