Coleopterological Notices, V. 439 



The unusually elongate prothorax will readily distinguish this 

 species. 



S. Stllisimilis n. sp. — Rather wide, feebly subcuneiforin, polished, im- 

 puiictate, rufo-testaceons throughout ; pubescence very sparse. Head wider 

 than long, slightly though distinctly narrower than the prothorax, the frontal 

 margin arcuate, much narrower than the neck ; eyes well developed, convex ; 

 tempora moderately convergent, broadly rounded to the neck ; subapical pit 

 large, very deep, abrupt, but slightly longer than wide ; two punctures behind 

 the middle separated by much less than one-third the width ; antennse two- 

 fifths as long as the body, slender, last three joints gradually larger, basal 

 joint thick, elongate, cylindrical, nearly as long as the next two. Prothorax 

 one-third wider than long, widest at the middle where the sides are strongly 

 rounded, strongly convergent anteriorly, more feebly so in basal half and 

 feebly sinuate ; base two-thirds wider than the apex ; median punctures 

 faint ; subbasal excavation large, deep, transversely lunate, with a deeper 

 punctiform fovea at the middle and each end ; lateral subbasal fovese isolated, 

 large, deep. Elytra as long as the head and prothorax, two-thirds wider than 

 the latter, about as long as wide ; sides feebly divergent, broadly arcuate ; 

 discal punctate stria deeply excavated before the middle ; the other punctures 

 and sutural stria as usual. Abdomen about as long and wide as the elytra, 

 the first visible dorsal short, with the usual pubescent line ; fourth nearly one- 

 half longer than the third. Legs slender. Length 1.7 mm. ; width 0.65 mm. 



California (Sonoma Co.). 



In the single male the abdomen is deflexed toward apex, the 

 venter broadly, indefinitely impressed behind, the fifth segment not 

 modified but having the pubescence erect, with a very wide area in 

 apical half completely glabrous, impunctate and highly polished, 

 the posterior edge even throughout; sixth with a transverse, feebly 

 tumid line behind the anterior margin, bearing a fringe of erect 

 setae. Anal segment with the unevenly oval included segment far 

 to the left of the center. 



This species is allied to parviceps, but differs in its larger head 

 with relatively much narrower frontal margin, and in the male 

 sexual characters. 



S. rilbida n. sp. — Broader, feebly subcuneiform, polished, impunctate, 

 sparsely pubescent, deep rufo-testaceous throughout, the elytra paler. Head 

 small, scarcely more than two-thirds as wide as the prothorax, wider than 

 long ; eyes large, convex, the tempora very rapidly convergent and broadly 

 rounded to the neck, the latter distinctly wider than the truncate frontal mar- 

 gin and rather more than one-half as wide as the maximum width ; frontal 

 pit deep, abrupt, acutely rounded behind ; fovese small, behind the middle, 

 distant by nearly one-third the width ; antennae two-fifths as long as the body, 



