COLEOPTERA. 59 



short distance anteriorly, then rather strongly arcuate behind ; together 

 broadly, roundly, and rather strongly emarginate behind ; suture scarcely 

 one-eighth as long again as the pronotum ; surface rather depressed, nearly 

 even, rather coarsely, feebly, and evenly punctate ; punctures round, not 

 separated by their own widths, occasionally partially coalescent in twos, but 

 not completely so ; interspaces feebly convex and shining. Abdominal seg- 

 ments decreasing nearly uniformly and gradually in width, first as wide as 

 the contiguous elytra ; surface highly polished, rather coarsely, closely, and 

 evenly punctulate ; transverse carinae tricuspid, middle cusps strong, be- 

 coming finely acicular toward the tips, lateral much shorter and somewhat 

 rudimentary ; cusps widely separated. Legs short and slender, dark pice- 

 ous-brown, nearly black above ; first joint of posterior tarsi twice as long as 

 the second, shorter than the fifth, joints two, three, and four very short, 

 sub-equal. 



Mule. — Unknown. 



Female. — Sixth ventral segment rather elongated, very evenly, though 

 rather narrowly, rounded behind. 



Length 2.8-3.1 mm. 



Detroit, Michigan, 1. 



Resembles parallehts somewhat ; the punctuation, however, is 

 much finer and of a different character. It may prove difficult, in 

 some specimens, to determine to which group it belongs, owing to the 

 punctures being almost entirely isolated. 



40. S. iieglectus n. sp. — Form rather slender. Pubescence so sparse 

 and line as to be scarcely visible on the head, prothorax, and elytra, longer 

 on the abdomen, where it increases in length toward the tip, and becomes 

 recumbent, cinereous. Head moderate, twice as wide as long; interocular 

 surface feebly excavated, twice as wide as the eye ; coarsely, somewhat 

 eveniy punctured, interspaces one-half as wide as the punctures, polished ; 

 equally trilobed by the very distinct sulcations ; intermediate elevation con- 

 vex ; antennae much longer than the width of head, very slender, first two 

 joints black, remainder piceous-black, club very slender ; third joint one- 

 third as long again as the fourth, joints four to six uniformly decreasing in 

 length, eighth very small, elongated, joints of club increasing in length, last 

 two of equal thickness ; maxillary palpi translucent, first joint rufo-testa- 

 ceous, second darker, third almost black. Prothorax similar to that of <S. 

 intrusus. Elytra at base as wide as the head ; sides divergent posteriorly 

 and arcuate, more strongly so posteriorly; together broadly and somewhat 

 strongly emarginate posteriorly ; suture just perceptibly longer than the 

 pronotum ; surface somewhat impressed on the suture at the base ; very 

 coarsely, deeply, and irregularly sculptured ; punctures occasionally isolated 

 and rounded, at other spots joined into tortuous channels, interspaces at 

 some points in the form of acute ridges, at others as broad as the channels, 

 very convex and polished, exhibiting at the same time a very minute reticu- 

 lation. Abdominal segments decreasing regularly and gradually posteriorly, 

 first nearly as wide as the contiguous elytra ; border strong ; surface convex. 



