Coleopterological Notices, V. 437 



Rufous or flavo-testaceous in various shades, never in the least black or 

 piceous. 



Terupora as prominent as the eye, rounded COrticiiia 



Tempora always less prominent than the eye. 



Head as wide as the prothorax ; tempora parallel but less prominent than 



the eye ; prothorax hexagonal grandiceps 



Head invariably distinctly narrower than the prothorax. 



Prothorax about as long as wide longicollis 



Prothorax more or less strongly transverse. 



Elytra fully twice as long as the prothorax ; frontal margin much 

 narrower than the neck. 

 Head larger ; tempora at first moderately convergent, then strongly 



rounded to the neck Slllisiniilis 



Head very small, much narrower than the prothorax ; tempora 

 extremely convergent and broadly, feebly rounded from the eye 



to the neck rilbida 



Elytra distinctly less than twice as long as the prothorax ; frontal 

 margin subequal in width to the neck. 



Prothorax widest before the middle parTicepS 



Prothorax widest at about the middle; smaller species, 1.6 mm. 

 in length, paler in color, the head relatively larger, with the 

 tempora more strongly convergent and broadly rounded from the 

 eye ; elytra shorter, more abruptly expanded and rounded at 

 the sides behind Cavifrons 



S. grandiceps n. sp. — Slender, parallel, polished, subimpunctate, pale 

 rufo-testaceous, the pubescence coarse and sparse. Head large, as wide as the 

 prothorax, wider than long, the frontal margin bisinuate and as wide as the 

 neck, equalling three-fifths of the maximum width ; eyes well developed, 

 moderately convex ; tempora parallel behind the eyes but not quite as promi- 

 nent, then strongly rounded to the neck ; subapical fovea very large, deep, 

 nearly as wide as long, triangular, with the apex behind ; foveas of the vertex 

 as usual ; antennae slender, as long as the head and prothorax, the outer 

 joints incrassate. Prothorax hexagonal, but slightly wider than long, widest 

 and narrowly rounded at the middle, the sides almost equally, strongly 

 convergent and nearly straight thence to base and apex, the latter but very 

 slightly narrower than the base ; large subbasal impression as usual, punc- 

 tate in the middle and just behind each lateral extremity, also prolonged 

 anteriorly at the sides, each spur extending to and including one of the usual 

 discal punctures ; lateral subbasal fovese isolated. Elytra fully as long as the 

 head and prothorax and one-half wider than the latter, rather longer than 

 wide, the sides nearly straight, feebly divergent, broadly, feebly arcuate near 

 the apex, the discal stria excavated beyond the middle. Abdomen rather 

 longer than the elytra but scarcely as wide, parallel, the border relatively not 

 quite as wide as usual ; structure throughout normal, the fourth visible dorsal 

 nearly one-half longer than the third. Length 1.4 mm. ; width 0.35 mm. 



