C 27 ] 



pressed, not obviously punctured, a little shorter than the 

 abdomen. 

 Inhab. Missouri 



Length over one tenth of an inch. 



4. B. aculipennis, Body brassy, highly polished, punct- 

 tured -.Tostrum as long as the head & thorax, arquated, lin- 

 ear: Momx. punctures profound but not close set; base 

 undulated, e/y/mwith acute, deeply impressed, impunc- 

 tured striae, wiiich, on the posterior declivity are dilated so 

 as to make the interstitial linesaci'te, and elevated ; tip of 

 the elytraon the middle with an elevated, acute tooth. 



Inhab. Mexico. 



Length one tenth of an inch. 



CRYPTORHYNCHUS, Illig. 



1. C. retentus^ Bodi/ covered by \ery short, dense, prost- 

 rate hair: ms'/r«m lonaror than the head and thorax ; a lit- 

 tle arquated, punctured & on the sides lineated : thorax with 

 two whitish undulate;' vittae : sciitel (trbicular : elytra with 

 four elevated, acute, interrupted lines, betw^ers which are 

 double series of impressed punctures: elevated lines ob«o-' 

 lete on the depressed tip : thighs emarginate towards the 

 tip & hidentate. 



Inhab. Mississippi. 



Length Ipss than three tenths of an inch. 



It seems to be rdated to C. obtentus, Herbst? 



1. C. lineaikollis. Noh. (Rynchsenus) Joiirn. Acad. Nat- 

 Sc. Vol. 3,p. 313 — As th.ishas evidently the pectoral gro- 

 ove it cannot belong to the genus Tylomus, the anterior 

 feet also are distant. 



3 C. palmacollis, Thorax with numerous small s;rooves. 



Inhab. U. S. 



^ nostrum longer than the head h thorax, with elevated 

 lines: cew/ot??^? sanguineous : ihorax yxlih. numerous 

 small grooves converging at (lie doi>:?>l line: elytra with 

 double series of large punctures, the intervening" lines ele- 

 cted, acute : thighs with an acute tooth. 

 Inhab. U.S. 



"^^ength one fifth of an inch. 



^ Hied to lineaticollis, N. but the punctures of the elytra^ 



