CALIFORNIA ACADEMY OF SCIENCES. 313 



punctate. Elytra at base distinctly narrower than the prothorax; sides 

 rather strongly divergent, feebly arcuate; together truncate behind, distinctly 

 wider than long and scarcely more than two-thirds as long as the pronoturu; 

 disk depressed and slightly more finely alutaceous thau the pronoturu. Ab- 

 domen about as wide as the elytra; sides straight, just visibly divergent 

 toward tip; border thick 1 ut very shallow; surface finely, evenly, moder- 

 ately densely and sub-asperately punctate, very feebly alutaceous and sub- 

 reticulate, shiniug; underside more densely, strongly and asperately punc- 

 tate. Legs slender; first joint of the posterior tarsi equal in length to the 

 second. Length 2.2 rum. 



California (Oakland, Alameda Co., 4). 



There are so many striking differences between the pres- 

 ent species and bicolor, that there is scarcely a doubt of its 

 distinctness generically; these are principally the dis- 

 similarity in antennal and tarsal structure. One of the most 

 salient differences, however, is due to the nature and 

 arrangement of the pubescence. In bicolor this is very 

 fine, much longer, and grows without any definite arrange- 

 ment; in Tnaritimus, however, it is very short and stout, 

 and on the pronotum is parted along the median line, 

 streaming out laterally and posteriorly in a beautifully regu- 

 lar manner. The antennae are so very strongly geniculate, 

 that the angle between the axes of the first and second joints 

 is only about sixty degrees. 



BRYONOMUS n. gen. (Staphyliniui.) 



The two species, Cafius canescens Mann, and C. seminitens 

 Horn., present so many aberrant characters that it seems 

 desirable to separate them generically under the above name. 

 In a memoir recently published by Dr. Horn in the Pro- 

 ceedings of the Entomological Society of Philadelphia, upon 

 the Philonthi of the United States, it is stated by this 

 author that these two species will probably be found to 

 form part of Dr. Sharp's genus Phucobius, from Japan. 

 Through the kindness of Dr. Sharp, who has sent me several 

 specimens of his Phucobius simulator, I am compelled to show 

 that this opinion is untenable, the mandibles in Phucobius 



