318 ACADEMY OF xNATURAL SCIENCES 



down or decaying : they are numerous, and many die when per- 

 fect, being unable to cut a passage through the bark. 



[Previously described by Germar as T. caUigraplim. — Lec] 



2. B. FASCiATLS. — Blackish; thorax at base and band on the 

 elytra, ferruginous. 



Busfrichiis/asriatus Melsh. Catal. 



Body brownish-black : thorax rough before, with slightly ele- 

 vated ruo-se, and with a few hairs ; behind glabrous, impunctured, 

 and pale ferruginous : elytra [256] destitute of striae, punctures 

 obsolete; basal half pale ferruginous; sutural region dusky; 

 posterior declivity hairy, slightly truncated, towards the suture, 

 indented. 



Yar. a. Band of the elytra occupying the greater portion of 

 the surface, and of a clay color. From Sinipuxent. 



Length more than one-tenth of an inch. 



[Belongs to Corthyhis Er. — Lec] 



3. B. XYLOGRAPHUS. — Rufous ; elytra with series of punc- 

 tures and short points on the posterior declivity. 



Bostrichus xijlographus Melsh. Catal. 



Body somewhat polished, a little hairy, rufous : thorax rugous 

 to the middle, on the centre of which is an obtuse, hardly raised 

 tubercle, behind which the surface is smooth, with a few very 

 small punctures : elytra with series of slightly impressed punc- 

 tures, the interstitial lines with minute punctures, furnishing 

 hairs ; posterior declivity not truncate, but with small dentieula- 

 tions on the interstitial lines. 



Length much less than three-twentieths of an inch. 



This insect is abundant in forests of the pine, (JPinus mitts 

 Mx.,) to which it is very destructive. Liimediately beneath the 

 bark, on the wood, it excavates a rectilinear groove, with short, 

 equal, lateral grooves at right angles with the preceding. 



It varies considerably in size. 



4. B. rOLiTUS. — Rufous, with rather long hair ; elytra entire. 

 Apatc politus Melsh. Catal. 



Thorax with elevated rather distant points before, [257] 

 gradually disappearing towards the base : elytra punctured, punc- 

 tures not regular in series ; tip simple : feet yellowish : tibiae 

 narrowed at tip. 



[Vol. V. 



