444 MEMOIRS ON THE COLEOPTERA 



the transverse raised margins of the three basal tergites rectilinear at 

 their hind margins, not at all prominent medially, anterior tarsi very 

 thick and subdilated. Length (9) 9-5 mm.; width 1.8 mm. Canada 

 (Hull, Province of Quebec), Beaulne. 



The abdominal pubescence in both protervus and finitimus is 

 shortened, coarser, fulvous and turned outward at the sides of the 

 ventral tergites, producing a pseudomaculation, such as is seen in 

 some Quediids; it is only feebly developed in finitimus, however, 

 which differs from protervus in its shorter antennae, finer cephalic 

 punctures, more prominent eyes, longer prothorax, which is dif- 

 ferently modified at the sides, finer elytral punctures and pubescence 

 and finer, denser abdominal sculpture. 



The two following species belong to the guadrulus group : 



Philonthus gracilior n. sp. Form slender, rather depressed, shining 

 and deep black throughout, the legs piceous, the antennae black or black- 

 ish throughout, longer than the head and prothorax, all the joints much 

 elongated; head quadrate, parallel at the sides, rather abruptly, trans- 

 versely rounded at base; surface densely and very coarsely punctured, 

 with a broad median smooth space, which is nearly crossed by a trans- 

 verse punctured area opposite the middle of the eyes, the latter only feebly 

 convex and at a third more than their own length from the base; prothorax 

 as wide as the head to narrower, slightly elongate, perceptibly narrowed 

 behind, having, laterally, only very few moderate punctures but, toward 

 the borders of the median impunctate line, coarser and more numerous 

 punctures; scutellum with close deep punctures, without a smooth margin; 

 elytra much elongated, very much longer and wider than the prothorax, 

 depressed toward the suture, which is finely rufous, the punctures moder- 

 ate but deep and rather close; abdomen strongly but not closely punctate; 

 sixth ventral (d 71 ) with a small subangulate apical sinus, the edge ad- 

 joining not modified; anterior tarsi rather feebly dilated. Length (cf 9 ) 

 6.0-7.5 mm.; width 1.2-1.25 rnm. California (Anderson Valley, Men- 

 docino Co.). 



I obtained a moderate series of this species, which, when com- 

 pared with a large series of guadrulus, obtained at Gilroy Hot 

 Springs, Sta. Clara Co., and at Sta. Rosa, north of San Fran- 

 cisco, betrays numerous differences; in quadrulus the size is larger, 

 the form stouter, the eyes smaller and more distant from the base, 

 the elytra much shorter, only very slightly longer than wide and 

 very much less conspicuously longer than the prothorax and the 

 scutellum constantly has a narrow punctureless shining margin; 

 finally the apical sinus of the male has a concave margin, in which 

 the integument becomes very thin and subhyaline. These speci- 



