STAPHYLINIDYE 197 



two specimens that he had collected at Pomona, one on Feb. 2, 

 1896, and the other on Feb. 3, of the same year, they were therefore 

 probably not taken at the same spot; one of them is a male, origi- 

 nally described by me as the type of the genus; the other is a female 

 and was therefore considered at that time as belonging to angustula. 

 Closer observation of this female, however, indicates that it can 

 not be specifically identical with angustula; it is described as follows: 



Amenusa spissula n. sp. Much stouter than angustula, though 

 resembling it throughout in coloration, sculpture and pubescence, also 

 in the sternal characters; surface dull, the elytra slightly, the abdomen 

 much more, shining, moderately stout in form, subparallel; head larger, 

 wider than long, almost five-sixths as wide as the prothorax, the eyes a 

 little larger and less distant from the base, not very prominent, the tem- 

 pora about three-fourths as long as the eyes and slightly less prominent, 

 feebly converging and evenly arcuate to the base; antennse extending 

 to basal third of the elytra, gradually and strongly incrassate, blackish, 

 the third joint shorter than the second, both much shorter than the first, 

 fourth not much thicker, slightly transverse, the fifth larger but not very 

 abruptly, five to the tip gradually wider, the tenth two-thirds wider than 

 long, the last subpyriform, as long as the two preceding; prothorax about 

 two-fifths wider than long, widest at apical third, where the sides are 

 rather broadly rounded, thence distinctly converging and straight to the 

 obtuse and blunt basal angles, the surface only very obsoletely modified 

 before the scutellum; elytra moderately transverse, at base a fifth wider, 

 the suture two-fifths longer, than the prothorax, the apices very broadly 

 and feebly sinuate laterally; abdomen parallel, distinctly narrower than 

 the elytra, the fifth tergite barely as long as the fourth; surface very 

 finely, rather sparsely punctate, more closely basally. Length 2.7 mm.; 

 width 0.7 mm. California (Pomona, Los Angeles Co.). 



Differs from angustula in its much stouter form, relatively larger 

 head and eyes and especially in the form of the antennae, which 

 gradually and rather rapidly become notably stout apically; in 

 angustula they are much thinner and are more nearly parallel from 

 the fifth joint to the tip; the prothorax also is larger and less trans- 

 verse than in angustula. 



Pectusa n. gen. 



Body short, moderately convex, the infra-lateral cephalic carinae 

 very fine but entire, the hypomera flat, moderately inflexed and 

 visible from the sides, the elytral apices not or scarcely at all sin- 

 uate laterally; first three abdominal tergites finely and only very 

 feebly impressed at base, the third not distinctly, the fifth much 



