AMERICAN PHILOSOPHICAL SOCIETY. 555 



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 somewhat double line, of which the posterior one is obsolete ; 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

 Gardiner Lyceum, together with many other interesting objects 

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

 ventris 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 lathsimus Fabr., 

 and is destitute of the wide elytral margin. 



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



2. D. HABlLis. — 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 Une 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.] 



