2H4 GEO. H. HORN, M. D. 



longer than wide, slightly narrower behind; sides distinc?tly sinuate, punctures 

 arranged in three very irregular series on each side, not numerous; elytra a little 

 wider and longer than the thorax, a little longer than wide conjointly, jaiceous, 

 apical margin narrowly testaceous, punctures moderate in size and very sparsely 

 placed; surftice shining, pubescence very sparse; abdomen uniformly brown, 

 apices of segments paler, very shining, punctuation and pubescence very sparse; 

 beneath uniformly brownish testaceous, punctured as above; metasternum pice- 

 ous. Length .13 inch; 3.5 (nearly) mm. 



The only specimen known to me is a female. The anterior tarsi are 

 scarcely at all dilated. This species resembles umhrlpennls more closely 

 than any other, and is known by the very sparsely punctate surface and 

 somewhat longer and more slender antennae. 



One specimen, (leorgia. 



C'AFIUS Steph. 



This genus was first defined by Stephens, but not recognized as suffi- 

 ciently distinct from Philonthus by Erichson, by whom the species were 

 placed as a section of the latter genus. '1 he characters are really feeble 

 but sufficiently constant, and the facies is certainly sufficiently well 

 marked. 



The posterior tarsi are constructed in the same manner as in Philon- 

 thus, that is, the first joint is quite long and rather longer than the fifth. 

 The last joint of the palpi is described by Fauvel (Faune Gallo-Rhenane) 

 as securiform, but I think this too strong a term, and the shape is to be 

 better expressed by — elongate oval flattened, more convex on the inner 

 side. 



The species of Cafius have a very characteristic facies except as to the 

 first two species. These should probably be referred to Sharp's genus 

 Phucobius (Trans. Ent. Soc. Lond., 1874, p. 35). In its habitat Cafius 

 is confined to the sea-coast and margins of tide-water streams. Of the 

 ten species known in our fauna two belong to the Atlantic coast the others 

 to the Pacific. 



The following table is arranged more for convenience in the recogni- 

 tion of species than as exhibiting any relation among them based on 

 facies, the latter I have attempted to indicate by their position on the 

 subsequent pages. 



The characters made use of in the table are sufficiently plain without 

 explanation except, possibly, the reference to the sharply defined median 

 space of the thorax. In all the species except femoralis^ the median 

 space is more convex, and is sharply limited by the lateral punctures ; in 

 that species, however, the median space is not more convex, and the limit 

 of the smooth space is very irregular. 



