STAPHYLINID^E. 65 



Resembles caviceps very much in color, sculpture and general 

 fades, but in that species the third antennal joint is shorter than 

 the second and very much shorter than the first, the eleventh much 

 longer than the two preceding and the elytra are relatively slightly 

 longer, with the external sinuses at apex obsolete and forming 

 oblique straight edges. There are also a few other distinctive 

 features, such as the evidently still larger average size of paratus. 



The following three species are much smaller than either caviceps 

 or paratus and have a rather different habitus, because of their 

 pale coloration; in no one of the examples at present before me can 

 any indication of male characters be detected on the upper surface 

 of the body. Trisectus is more slender in form and is dark in color, 

 the two oblique basal impressions of the prothorax possibly be- 

 tokening the male, but rather more probably not; it hardly seems 

 that they can be spurious or individual, however, as they are 

 deep and perfectly symmetric bilaterally: 



Tinotus pallidus n. sp. Stout, fusoid, moderately convex and rather 

 shining, pale and uniform brownish-testaceous throughout the body and 

 legs, the head blackish-piceous; punctures small, well separated, strongly 

 asperate, the bilinear punctures of the abdomen numerous; vestiture pale, 

 consisting of very thick, short and separated hairs, longer on the abdomen, 

 where they bristle from the segmental apices; head orbicular, a little 

 wider than long, the eyes large, at less than their own length from the 

 base; antennae rather short, incrassate distally, blackish, paler basally, the 

 third joint as long as the second but more slender, fourth a little longer, 

 the fifth somewhat shorter, than wide, the outer joints two-thirds wider 

 than long, the last as long as the two preceding; prothorax nearly four- 

 fifths wider than the head, not quite twice as wide as long, the sides 

 strongly rounded, strongly converging before the middle, the apex much 

 narrower than the rounded base, the surface strongly convex and even; 

 elytra rather large, fully as wide as the prothorax and very distinctly 

 longer, the oblique sides of the apex nearly straight; abdomen not quite 

 as wide as the elytra, parallel basally, gradually strongly and arcuately 

 narrowing apically, the apex about three-fifths as wide as the base; 

 margins thick. Length 2.0-2.3 nim. ; width 0.63-0.68 mm. Iowa (Cedar 

 Rapids). 



Distinguishable by its stout fusiform outline and pale coloration, 

 also, in common with many other species, by its short pale and very 

 coarse vestiture. 



Tinotus brunneus n. sp. Narrower, less fusiform and more convex, 

 slightly shining, pale red-brown in color, the head and a feeble abdominal 

 cloud, involving the fourth and fifth tergites, blackish; sculpture and 



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



