108 NORTH AMERICAN 



Prothorax distinctly elongated, widest at one-third its length 

 from the apex ; abdominal segments yery rapidly decreasing in 



width 105. dives. 



Prothorax very robust, just perceptibly narrower than long, 

 widest very near the middle ; abdominal segments broad, 

 decreasing very slowly in width. 

 First joint of posterior tarsi one-half longer than the second ; 



body coarsely punctured 106. sul)griseilS. 



First joint two-thirds longer than the second ; body much more 



finely and closely punctured 107. terricola. 



First joint of posterior tarsi twice as long as the second. 



Large species 3.7—4.1 mm. ; body excessively minutely punctate ; 

 pubescence long and recumbent. Washington Territory. 



10S. muiidtilus. 

 Small species not exceeding 2.!) mm. in length. 



Prothorax widest before the middle ; pronotum remarkably tuber- 



culate. Florida 109. tuberculatiis. 



Prothorax widest at the middle; surface of pronotum very even. 

 Antennal joints four and five equal in length, one-third shorter 



than the third 110. in distinct US. 



Antennal joints three, four, and five uniformly and very rapidly 



decreasing in length ; body very densely and conspicuously 



hirsute 111. for 11 ma i is. 



84. S. dolosllS n. sp. — Form rather slender. Pubescence long, fine, 

 rather dense, sub-recumbent, pale fiavo-cinereoiis. Head small, twice as 

 wide as long ; interocular surface equally trilobed by the very distinct sulca- 

 tions ; intermediate and lateral surfaces nearly equally, rather strongly, and 

 evenly convex ; punctures rather coarse and very close, nearly even ; ocular 

 lines meeting at about four lengths in advance ; antennae about equal in 

 length to the width of head, piceous-black, very slightly paler toward tip, 

 club moderate; third, fourth, and fifth joints decreasing nearly uniformly 

 and very gradually in length, sixth and seventh sub-equal in length and 

 much shorter, last two joints much thicker than the ninth ; maxillary palpi 

 short and robust, piceous-black, first joint paler. Prothorax robust and 

 somewhat cordate, widest well before the middle, where it is three-fourths 

 as wide as the head, and nearly one-sixth narrower than long ; sides thence 

 moderately convergent posteriorly and slightly sinuate ; anterior margin 

 slightly longer and much more arcuate than the posterior ; surface somewhat 

 longitudinally ridged at the sides toward the base, finely and irregularly 

 punctate; punctures impressed, very distant in the middle, closer toward the 

 margins ; interspaces very convex, highly polished ; canaliculation nearly as 

 long as the pronotum, narrow, deep, equally wide throughout. Elytra at 

 base distinctly wider than the head; sides just perceptibly divergent poste- 

 riorly, as long as the width at base, feebly arcuate ; together broadly and very 

 feebly emarginate behind : suture one-fifth as long again as the pronotum ; 

 surface somewhat uneven, rather finely and evenly punctate; punctures im- 

 pressed ; interspaces nearly as wide as the punctures, very convex, highly 



