COLEOPTERA. 123 



small, widely separated, round, and evenly distributed : interspaces nearly 



flat; ocular lines meeting at fully three lengths in advance; first joint of 

 antennae black, second piceous-black and more slender; first joint of maxil- 

 lary palpi translucent, pale piceo-testaceous, second much darker. Protho- 

 rax arcuately, evenly, and gradually increasing in width to a point slightly 

 in advance of the middle, where it is distinctly narrower than long, and 

 three-fourths as wide as the head; sides thence moderately convergent and 

 evenly sinuate; anterior margin slightly shorter and more annate than the 

 posterior; surface nearly evenly convex, finely, rather distantly, and very 

 evenly punctate; interspaces scarcely as wide as the punctures, nearly flat, 

 highly polished. Elytra at base just perceptibly narrower than the head; 

 sides moderately divergent posteriorly, slightly longer than the width at 

 base and rather strongly arcuate ; together broadly, evenly, and feebly 

 emarginate behind ; suture one-third as long again as the pronotum ; surface 

 rather convex, strongly and roundly impressed along the suture, and feebly 

 so near the outer apical angles ; sutural impression rapidly widening toward 

 the base ; punctures rather .email, round, feebly impressed and very evenly 

 distributed ; interspaces as wide as the punctures, slightly convex, and very 

 highly polished. First three abdominal segments equal in width, and as 

 wide as the contiguous elytra; surface broadly convex, finely, feebly, and 

 evenly pun ctulate ; transverse carinae apparently not cusped. Legs short 

 and slender, piceous-black, slightly paler beneath ; first joint of the posterior 

 tarsi scarcely one-fourth as long again as the second, second distinctly longer 

 than the third, fourth narrow and very oblique, fifth longer than the first, 

 very narrow at the base, and widest near the distal extremity. 



Male. — Unknown. 



Female. — Sixth ventral segment very broad and very broadly rounded be- 

 hind, transversely truncated through a small extent at the immediate apex. 



Length 2.8 mm. 



Stockton, California, 1. 



The antennae are missing, with exception of the first two joints ; 

 also the third joint of the maxillary palpi. 



101. S. juveiiCUS n. sp. — Form rather slender. Pubescence long, sub- 

 recumbent, close, rather coarse, prominent, pale fulvo-cinereous, very dense 

 on the abdomen. Head moderate, twice as wide as long; interocular surface 

 flat, twice as wide as the eye, evenly, rather finely, and somewhat distantly 

 punctate; longitudinal elevation narrower than the lateral portions, feebly 

 and evenly convex, crest broadly impnnctate ; interspaces very highly 

 polished; eyes small, very convex, clothed thickly with rather long, erect 

 setae ; ocular lines meeting at somewhat more than one length in advance ; 

 antennae as long as the width of head, rather slender, club distinct, piceous- 

 brown ; third joint one-third as long again as the fourth, fourth slightly 

 longer than the fifth, sixth and seventh equal and abruptly shorter, eighth 

 very slightly elongated, ninth as wide as long, much smaller than the tenth, 

 tenth and eleventh equal in width, the latter slightly the longer, and obtuse 

 at tip; maxillary palpi moderate, pale piceous-brown, first joint paler and 

 testaceous. Prothorax widest at the middle, where it is four-fifths as wide 



