G8 NORTH AMERICAN 



Detroit, Michigan, 3. 



Both terminal joints of the antennae in the above type specimen 

 are deeply indented almost throughout their length and breadth 

 below, but I can find no sign of such a malformation in the other 

 specimens. This species is quite distinct from these which most 

 resemble it, in the elongated terminal joint of the tarsi. 



49. S. spliaerops n. sp. — Form moderately slender. Pubescence rather 

 long, recumbent, close, and abundant on the abdomen, much more sparse on 

 the remainder of the upper surface, flavo-cinereous. Head large, more than 

 twice as wide as long; interocular surface twice as wide as the eye, nearly 

 flat, finely sub-variolately, rather closely and evenly punctate ; longitudinal 

 elevation wider than lateral portions, evenly convex and distinct ; ocular 

 lines meeting at three to four lengths in advance ; antennae slender, much 

 longer than the width of head, piceous-black, paler toward the tip, club 

 moderate, slender ; joints three to seven much elongated, third joint one- 

 third as long again as the fourth, fourth and fifth sub-equal, sixth and 

 seventh sub-equal in length, shorter, the latter slightly thicker, eighth 

 three times as long as wide, joints of club elongated, increasing in length : 

 maxillary palpi long and slender, piceous-black throughout. Prothorax 

 widest at the middle, where it is two-thirds as wide as the head, and dis- 

 tinctly narrower than long ; sides thence moderately convergent posteriorly 

 and feebly sinuate ; anterior margin slightly longer and more arcuate than 

 the posterior ; surface rather strongly tuberculate along the sides toward 

 the base, finely, very closely, deeply, and irregularly punctate; punctures 

 crowded and transversely elongated near the margins, often widely isolated 

 near the middle, along the middle throughout the entire length there is a 

 narrow line sunken slightly below the general surface, from which the punc- 

 tures seem to stream out. Elytra at base distinctly narrower than the head ; 

 sides feebly divergent posteriorly, equal in length to the width at bast', very 

 feebly arcuate, more so posteriorly; together broadly and feebly emarginate 

 behind; suture equal in length to the pronotum ; surface rather coarsely, 

 very deeply, closely, and somewhat irregularly punctate, interspaces very 

 convex, highly polished. Abdominal segments decreasing uniformly and 

 rather gradually in width, first somewhat narrower than the contiguous 

 elytra : surface feebly convex, rather finely, closely, and evenly punctulate ; 

 transverse carinae strongly arcuate posteriorly, 4-cuspid, cusps very tine, 

 rather approximate, aciculate, more coarsely so on the first two segments. 

 Legs long and slender, fuscous, except the under surfaces of the femora, 

 which are rufous; first joint of the posterior tarsi two-thirds as long again as 

 the second, as long as the second and third together, and somewhat longer 

 than the fifth, joints two to four uniformly and gradually decreasing in 

 length. 



j/,,/, . — Posterior edge of the fourth ventral segment emarginate in its 

 middle third, emargination evenly rounding and just perceptible, contiguous 

 surface flattened anteriorly ; fifth segment emarginate in its middle third at 

 apex, emargination rather strong, evenly rounded, and six times as Avide as 



