STAPHYLINID/E. 173 



three female types of truncula with the female of Carolina, however, 

 it may be observed that the antennee in the former are a little 

 shorter and less rapidly or less distally incrassate, the enlargement 

 being more gradual and from a point further behind the middle, 

 the joints five and following relatively more transverse; the body 

 is slightly less stout and the sides of the prothorax from base to 

 apex more converging and less arcuate. 



Platandria deductor n. sp. Moderately stout, convex and shining, piceous- 

 brown, darker gradually from the elytra to the head, the abdomen black, 

 with the apex of the fifth tergite pale; punctures fine, on the elytra dense 

 and asperulate as usual; head slightly transverse, the eyes not very convex 

 and at nearly their own length from the base; antennae longer than in any 

 of the preceding, black, pale only basally, the third joint much shorter than 

 the second, the fourth a little wider than long, five abruptly larger than the 

 fourth and slightly wider than long, the joints thence to the tip more gradu- 

 ally larger, or, together, more parallel than in the other species, the outer 

 joints transverse, the last ogival, not quite as long as the two preceding; 

 prothorax narrower than in the preceding species and smaller, only very 

 moderately transverse, narrowed from base to apex, with arcuate sides, equal 

 in width to the elytral base but decidedly narrower than the apex; elytra 

 with diverging sides, the suture only about a third longer than the prothorax; 

 abdomen ( 9 ) more narrowed from base to apex and less punctate than in 

 truncula. Length 1.75 mm.; width 0.65 mm. Kansas (McPherson), 

 Knaus. 



The two types of this species are also females, but it may be 

 distinguished at once from truncula by the abdominal and antennal 

 characters and the smaller, less transverse prothorax. The sixth 

 tergite in these two females does not seem to be at all sinuate at 

 tip but rather broadly arcuato-truncate. 



Platandria columbica n. sp. Somewhat narrower, convex, shining, pale 

 testaceous, the abdomen black or nearly so, the legs piceo-testaceous; punc- 

 tures fine, not close except on the elytra, where they are close-set but only 

 feebly asperulate, the abdomen with numerous small punctures and the usual 

 rather coarse imbricate sculpture of the genus; head wider than long, the 

 sides parallel, the eyes large, very finely faceted, at much less than their own 

 length from the base; antenna; rather short, slender and testaceous basally, 

 somewhat rapidly incrassate, blackish and thick beyond the fourth joint, 

 the second joint as long as the first but thinner, also distinctly longer than 

 the third, the fourth slightly longer than wide, the fifth larger, wider than long 

 and more obtrapezoidal, the outer joints distinctly transverse; prothorax 

 convex, only very moderately transverse, only slightly narrower at apex 

 than at the much rounded base, the sides subparallel and evenly, rather 

 strongly rounded, much wider than the head and barely as wide as the elytral 

 base, the basal angles rounded, unimpressed; elytra long, scarcely visibly 



