126 ACADEMY OF NATURAL SCIENCES 



basal band is extended very near to tlie scutel, so as the more 

 completely to inclose the transverse black spot. In the fasciata 

 the elytra are distinctly punctured in striae, the humeral spot is 

 orbicular, and the basal portion of the basal band does not extend 

 towards the scutel further than the middle of the base. In the 

 Philadelphia Museum is a fine specimen of this insect, which was 

 probably caught in Pennsylvania. 

 [Belongs to Z>«c«e.— Leg.] [197] 



BYTURUS Latr. 



B. UNICOLOR. — Eeddish-yellow, hairy ; thorax each side de- 

 pressed ; tergum dusky. 



Inhabits Arkansa. 



Eyes black; thorax, posterior angles broadly depressed and 

 slightly reflected, the depression continued on the side, but nar- 

 rowed towards the anterior angles ; wings dusky. 



Length three-twentieths of an inch. 



This species is most closely allied to B. tomento.ms of authors 

 A single specimen was brought from the Arkansa by Mr. Nuttall. 



DERMESTES Linn. Latr. 



D. MARMORATUS. — Marbled with blackish-brown, and cine- 

 reous or ferruginous hair, with a large cinereous humeral spot. 



Inhabits the United States. 



Antennae reddish-brown : thorax indented before the scutel : 

 pectus blackish : postpectus and coxse with dense white hair : 

 feet blackish J intermediate and posterior thighs with a white 

 band before ; spot on the lateral basal margin of the elytra, large, 

 angular : venter with dense white hair ; anal segment and lateral 

 spots black-brown. 



Length from three-tenths to nine-twentieths of an inch. 



This insect is of frequent occurrence in Missouri and Arkansa, 

 and is a large species. [ 198 ] 



SCAPHIDIUM Fabr. 

 1. S. 4-QUTTATUM. — Black ; thorax with an undulated series 

 of large punctures; elytra with four rufous spots, anterior one 

 panduriform. 



Inhabits the United States. 



[Vol. Ill 



