COLEOPTEKA. 69 



deep, contiguous surface flattened, or very feebly and cylindrically impressed 

 throughoul anteriorly; sixth segment deeply sinuate at apex, sinus evenly 

 rounding, three times as wide as deep, having nearly the same curvature as 

 the apices ; seventh segment feebly emarginate at tip. 



Ft male. — Unknown. 



Length 4.0 nun. 



Tyngsborough, Massachusetts, 1. 



This line species is very distinct; tin- eyes are very large and con- 

 vex ; the abdomen is covered densely beneath with very long, fine, 

 piceous pubescence. 



50. S. militai'is n. sp. — Form moderately robust. Pubescence short, 

 line, sub-recumbent, sparse, setiform, and cinereous. Head moderate, more 

 than twice as wide as long ; interocular surface slightly convex, nearly three 

 times as wide as the eye, coarsely, very closely, variolately, and evenly 

 punctate; longitudinal elevation wider than the lateral portions, rather 

 acutely convex and moderately prominent ; ocular lines meeting at nearly 

 three lengths in advance ; antennae very slightly longer than the width of 

 head, black, club large ; third joint one-half as long again as the fourth, 

 joints four to seven decreasing uniformly and very slowly in length, eighth 

 slightly elongated, regularly oval, joints of club increasing in length ami 

 thickness, last nearly as long as the ninth ami tenth together; maxillary 

 palpi short, piceous-black, first joint very slightly paler. Prothorax robust, 

 widest at the middle, where it is four-fifths as wide as the head ami just 

 perceptibly narrower than long; sides thence equally convergent anteriorly 

 and posteriorly, and nearly straight ; anterior and posterior margins equal in 

 length, the former slightly the more arcuate ; surface transversely and very 

 faintly impressed just behind the apical margin, and feebly tuberculate at 

 the sides near the base, finely, very closely, somewhat regularly and sub- 

 variolately punctured ; canaliculation in the form of a mere erosion in the 

 middle, one-half as long as the pronotum, and very difficult of observation. 

 Elytra at base very slightly narrower than the head ; sides feebly divergent 

 posteriorly, slightly longer than the width at base, feebly arcuate; together 

 broadly and distinctly emarginate behind; suture one-seventh as long again 

 as the pronotum ; surface faintly impressed along the suture ami feebly 

 tuberculate near the middle of each elytron, rather coarsely, closely, and 

 irregularly punctured, punctures rather deeply impressed, interspaces gene- 

 rally one-fourth as wide as the punctures, convex, polished. Abdominal 

 segments decreasing uniformly and rather rapidly in width, first as wide as 

 the contiguous elytra ; surface broadly convex, coarsely and distantly punc- 

 tulate, much more finely and closely so toward the tip ; transverse carinae 

 4-cuspid, cusps closely approximate, short, equal, and stout. Legs robust, 

 black above, piceous-black beneath: first joint of the posterior tarsi two- 

 thirds as long again as the second, longer than the next two together, ami 

 somewhat shorter than the last, third and fourth sub-equal. Under surface 

 of abdomen coarsely and closely punctulate, densely clothed with long, 

 coarse, cinereous setae, which are nearly recumbent. 



