634 Coleopterological Notices, VI. 



as the prothorax and a little more than twice as long as mde, parabolic in 

 apical fourth ; sides parallel ; humeri evenly rounded to the prothorax, becom- 

 ing transverse just before that limit; impression within the humeri just trace- 

 able ; disk moderately coarsely punctate as usual, the shining interspaces finely 

 punctate. Under surface finely densely and uniformly punctate and pubescent. 

 Length 7.0 mm. ; width 1.9 mm. 



California (Hoopa Val., Humboldt Co.). 



This species is represented by a single male, which has the fifth 

 ventral segment broadly truncate at apex ; it resembles variipes 

 in general form, but differs in coloration, smaller size, relatively 

 much smaller head and prothorax, the latter without a well marked 

 median channel, denser vestiture and several other characters. 



S. nimiliS.— Stout, convex, black throughout, the tibiae just visibly ru- 

 fescent; elytra opaque, the surface scarcely at all visible through the dense 

 cinereous vestiture which clothes every part of the body. Head small,' dis- 

 tinctly shorter and narrower than the prothorax, almost as long as wide, 

 densely opaque, the surface concealed ; eyes separated by a little more than 

 tmce their own width on the front; tempora rather more prominent tlian the^ 

 eyes and about two-thirds as long ; antennae slender, but little longer than the- 

 head and prothorax, the stouter basal joint not paler. Prothorax slightly wider 

 than long, sculptured and clothed like the head, rounded on the sides anteri- 

 orly, thence feebly, obliquely narrowed to the dilated basal margin; apical 

 constriction fine but deep, the lobe crescentiform, rounded on its anterior mar- 

 gin though short ; lateral impressions distinct ; canaliculation narrow but very 

 deep, appearing like a coarse crack. Elytra twice as wide as the prothorax, 

 but slightly more than twice as long as wide, gradually narrowed and para- 

 bolically rounded behind in apical two-fifths; sutural angles rounded; humeri 

 slightly rufescent, rounded to the prothorax, the humeral impression slight; 

 disk with composite punctuation as usual, the interspaces shining but almost 

 completely concealed except toward base. Abdomen extremely densely punc- 

 tulate and pubescent. Legs normal. Length 11.5 mm. ; width 3.3 mm. 



Southern California. 



The unique type of this very distinct form is probably a female; 

 the dorsal pygidium is almost completely' visible and porrect be- 

 hind the elytra, and the fifth ventral is slightly longer than the 

 fourth, narrowed behind, the apex rather narrowly truncate, the 

 basal margin rufescent. 



S. rufipes. — Rather slender, black, shining, the vestiture but slightly 

 concealing the surface lustre; legs testaceous; pubescence stiff, yellowish-cinere- 

 ous in color, feebly nucleated on the elytra. Head slightly wider than long, 

 strongly, very densely and rugosely punctate; eyes large, globose, separated 

 by one-half more than their own width, the tempora behind them much less 

 prominent and only about one-third as long; antennse very slender, filiform, 



