STAPHYLINID.E 



129 



little more prominent, parallel and rounded; antennae long, blackish 

 throughout, notably slender and subfiliform, the third joint two-thirds 

 as long as the second, fourth to seventh much longer than wide, the 

 fourth the narrowest, eight to ten short, mutually subsimilar and fully 

 as long as wide or a little longer, the last gradually pointed and as long 

 as the two preceding or very nearly; prothorax well developed, fully 

 two-fifths wider than long, but little widest and with the sides broadly 

 rounded anteriorly, thence but slightly narrowed and with straight sides 

 to the base, the median line very feebly and not finely impressed through- 

 out but more broadly toward base; elytra subparallel, moderately trans- 

 verse, only about a sixth wider and barely a third longer than the pro- 

 thorax; abdomen parallel, distinctly narrower than the elytra, the fourth 

 and fifth tergites subequal, the first three with the basal impressions only 

 moderately wide and rather sharply though moderately concave, 

 subequal. Length 2.1 mm.; width 0.51 mm. California (Santa Rosa). 



Distinguishable by the very slender and subfiliform antennae, 

 rather small head and eyes and other features. 



Paradilacra sinistra n. sp. -Rather stout, moderately convex, parallel, 

 the coloration, very minute dense sculpture and dull lustre as in the 

 preceding, the elytra however perceptibly piceous-brown; head well 

 developed and much wider than long, fully two-thirds as wide as the 

 prothorax, the eyes moderate, at their own length from the base, the 

 tempora notably more prominent, parallel and rounded; antennae long, 

 slender, subfiliform though very slightly and gradually incrassate distally, 

 the third joint only a little shorter than the second, four to six very 

 much, seven to ten more or less evidently, longer than wide, the last 

 slender, very nearly as long as the two preceding; prothorax unusually 

 developed, two-fifths wider than long, widest and rather strongly rounded 

 at the sides anteriorly, thence very distinctly narrowing and with nearly 

 straight sides to the base, the median line very feebly impressed through- 

 out, very broadly and rather deeply toward base; elytra distinctly 

 transverse, subparallel, at base barely discernibly wider than the pro- 

 thorax, the suture about a fourth longer, impressed rather broadly 

 behind the scutellum; abdomen parallel, with rather thick margins, 

 narrower than the elytra, the fourth and fifth tergites equal, the im- 

 pressions of the first three rather broadly and deeply concave, more 

 shining than the rest of the surface and subequal. Length 2.2 mm.; 

 width 0.58 mm. California (San Jose and Sta. Clara Valley). 



Differs from the preceding in its broader prothorax and larger 

 head, slightly less slender and more sensibly thicker distal part of 

 the antennse and in its broader, more concave and more equal 

 three transverse basal impressions of the abdomen; from densissima 

 it differs in its less developed eyes, relatively less abbreviated 

 third antennal joint and in the distinct and subequal abdominal 

 impressions. 



T. L. Casey, Mem. Col. II, August 1911. 



