504 Coleopierological Notices, V. 



Alabama (Mobile). Mr. Soltau. 



Differs from pectoralis, which it stron<?ly resembles, in the coarser 

 punctuation and especially in the much coarser and more coarsely 

 punctate elytral stri*. The prosternal stri« are very much longer 

 than is usual in pectoralis. A single specimen. 



S. SUbaBratUS. — Narrowly oval, convex, very highly polished, black, 

 with a feeble but distinct seneons lustre ; legs scarcely paler. Head finely 

 sparsely and rather feebly punctate ; frontal stria extremely fine, oblique at 

 each side. Prothorax four-fifths wider than long ; sides convergent from the 

 base, broadly arcuate and strongly convergent anteriorly ; marginal stria dis- 

 tinct ; disk punctured as in pectoralis. Elytra rounded at the sides, one-half 

 longer than the prothorax, and, at basal third, distinctly wider, the marginal 

 and outer subhumeral stride as in ohsidianus ; inner subhumeral completely 

 obsolete ; oblique humeral straight, scarcely extending beyond basal fourth 

 and distant from the first dorsal even at base ; dorsal strife coarse and coarsely 

 punctate, short, slightly irregular, extending to about the middle, the first 

 scarcely longer and bent inward at base ; second much more distant from the 

 third toward base than the latter is from the fourth, which is broadly arched 

 at base joining the sutural, the latter very fine toward base and not extending 

 quite to the apex ; punctures rather coarse and decidedly sparser, distributed 

 nearly as in ohsidianus. Pi/gidia finely but strongly, densely punctate through- 

 out. Presternum feebly convex, the striae nearly straight, distant behind, 

 gradually convergent and almost contiguous just behind tlie apical margin. 

 Anterior tibiae very finely serrulate externally. Length 2.8 mm. ; width 

 2.1 mm. 



Louisiana (New Orleans). 



This species may be readily distinguished from the preceding by 

 the smaller size, narrower form, aeneous lustre and finer, sparser 

 sculpture. They both differ from pectoralis in the coarser elytral 

 striae and disposition of the elytral punctures, which in the latter 

 extend forward scarcely more near the suture than laterally. 



S. laramiensis* — Oblong, the sides broadly arcuate, moderately convex, 

 highly polished, black, the elytra and femora daik rufo-piceous ; tibise and 

 tarsi rufescent ; lustre not metallic. Head finely, evenly, rather closely punc- 

 tate, the marginal stria feebly traceable only at each side of the front ; disk 

 with a larger puncture just behind the middle and quite distant from the base. 

 Prothorax a little more than twice as wide as long, the sides only feebly con- 

 vergent near the base, broadly rounded and strongly convergent in apical 

 third ; marginal stria fine ; punctures sparse but distinct throughout, finer 

 toward the middle, only sliglitly closer laterally, much coarser near the basal 

 margin. Elytra more strongly rounded at basal fourth where thay are rather 

 distinctly wider than the prothorax, one-half longer; punctures sparse and 

 visible throughout, becoming gradually rather coarse posteriorly except toward 



