558 TRANSACTIONS OP THE 



tion of tlie palpi is coufiaed to the labial. The name is derived 

 from the words copto, I cut, and tome, joint or articulation, in al- 

 lusion to the form of the palpi. 



C. SERRIPALPUS, — Yellowish; elytra brownish varied with 

 whitish. 



Inhabits Mexico. 



Body oblong-oval, honey-yellow ; head black on the posterior 

 margin ; labial palpi with the penultimate joint crenate or bitu- 

 berculate before ; thorax on the middle of the anterior and pos- 

 terior margins broadly black ; elytra brownish, with very numer- 

 rous, minute honey-yellow [444] points ; two very slightly im- 

 pressed striae, with punctures hardly distinguishable from minute 

 inequalities of the surface, and an indistinct part of a series of 

 hardly impressed punctures each side ; from the base near the 

 seutel proceeds a whitish broad vitta one-fifth of the length of 

 the elytra, bifid at tip ; from the humeral base to the tip, pro- 

 ceeds a broad, interrupted and somewhat irregular vitta also whit- 

 ish ; venter piceous. 



Length less than three-tenths of an inch. 



This insect was obtained on the estate of the Conde del Regla 

 about 10 leagues N. E. of the city of Mexico, by William Ben- 

 nett, and presented to me by Mr. William Maclure. It cannot 

 be the Dytkcus circumscriptus, Germ., which is " breviter ovali." 



LACCOPHILUS Leach. 

 L. MACULOSUS Say, Trans. Amer. Philos. Soc— Since described, 

 by Germar, also under the name of lyiaculosus, Sp. Gen., p. 30. 



HYPHYDRUS Latr. 

 H. PUNCTATUS Say, (Laccophilus) Journal of the Acad. Nat. 

 Science. 



[Ante, 1,178. Belongs to Ilydroporxis. — Leg.] 



HYDROPORUS Clairv. 

 1. H. BIFIDUS. — Elytra with a subsutural, impressed, punc- 

 tured stria. 



Inhabits Mexico. 



Body black ; head with raxich dilated indentations between the 

 eyes ; a longitudinal honey -yellow line, more dilated before ; an- 



[Vol. IV. 



