818 ACADEMY OF NATURAL SCIENCES 



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

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



[Previously described by Gerniar as T. calUgraphus. — Leg.] 



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

 elytra, ferruginous. 



Bostrichus fasciatus Melsh. Catal. 



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

 vated rugae, 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. 



Var. 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 Corthi/lus Er. — Lec] 



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

 tures and short points on the posterior declivity. 



Bostrkliux xijhgraphus 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 denticula- 

 tions on the interstitial lines. 



Length much less than three-twentieths of an inch. 



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

 Mx.,) to which it is very destructive. Immediately 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. POLITUS. — Rufous, with rather long hair; elytra entire. 

 Apate 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. Y. 



