AMERICAN PniLOSOPUICAL SOCIETY. 555 



semicircle, divaricating at its anterior tips into a more dilated 

 spot between the canthus of the eye and the nasus, which is yel- 

 lowish, excepting the anterior edge j above the nasus a transverse 

 impressed line, ending each side in a more dilated spot ; thorax 

 margined all around with honey-yellow ; anterior margin with a 

 somewhat double line, of which the posterior one is obsolete; 

 posterior margin with the yellow color, near the lateral angles, 

 contracted or almost obsolete; elytra with [441] about ten 

 grooves which extend three-fourths the distance to the tip, the 

 four exterior interstitial spaces confluent, or nearly so, by twos; 

 lateral margin not dilated, honey-yellow with an obsolete branch 

 towards the tip, proceeding obliquely to the suture ; beneath 

 honey -3'ellow, sutures more or less margined with black. 



Length one inch and a half. 



This fine large species was sent me by Dr. E. Holmes of the 

 (lardiner Lyceum, together with many other interesting object.^ 

 of natural history. It is more than double the size of D. fasci- 

 vcntn's Say, and may also be distinguished from that species 

 by the confluent termination of the four exterior grooves of the 

 elytra in the female. It is less dilated than the l<tfissimus Fabr., 

 and is destitute of the wide elytral margin. 



[Afterwards described as D. OuUijhuku Kirby. — Lec] 



2. D. UABiLis. — Blackish-olivaceous; thorax and elytra mar- 

 gined with yellow ; elytra with three series of punctures. 



Inhabits Mexico. 



Body oval ; above with minute, distant punctures ; head with 

 a frontal rufous angular line or semicircle, divaricating at its an- 

 terior tips into a more dilated spot between the canthus of the 

 eye and the nasus, which is yellow, excepting the anterior edge ; 

 above the nasus on each side is an orbicular, punctured indenta- 

 tion ; front each side at the eye with an indented, punctured 

 line; thorax with a broad yellow margin; dorsal line acute, dis- 

 tinct, not extending upon the margins ; a line of impressed punc- 

 tures on the anterior margin interrupted in the middle ; lateral 

 margin not at all depressed ; scutel honey-yellow on the poste- 

 rior submargin ; elytra with three series of impressed punctures : 

 the exterior series less distinct ; general puncturation near the tip 

 much larger and more obvious; posterior margin yellowish with 

 1834.] 



