24 



very distinct. The figures of the trophi were from this speci- 

 men, and I trust will prove to be exact. [PI. iv, fig. 7.] 



I have lately received an interesting letter from Mr. Kirby, 

 in which he makes some remarks on the species of Chremasto- 

 cheilus. Some time since I wrote to him for Mrs. Peck, and 

 sent to him, as I have before informed you, a specimen of the 

 ChremastocJieilus which we supposed to be the castanece. He 

 says that he has seen the true O. castanece^ which, according to 

 figure and description of Knoch, has the thorax broadest be- 

 hind, and that the specimen sent him must therefore be dis- 

 tinct. It is a matter of reo-ret to me that this information was 

 received too late to alloAV me to make use of it in mv account 

 of the species : but it will be communicated in a note accom- 

 panying the plate. Mr. Kirby further says that he has two 

 other species, which he names; one, C. canaliculatus, is from 

 Berkshire Co., Mass., and is the largest; the other is the 

 smallest of the three, and is from Georgia; neither have been 

 described. Mr. Kirby has subdivided the genus Trichius 

 thus: — T. fasciatus is the type of Trichius; T. hemiptcrus of 

 Acantliarus ; T. eremita, eremicola, etc., of Gymnodus, and T, 

 marginatus of Campapus. 



IIENTZ TO HARRIS. 



CiiAPKL IIiLi., March 25, 1827. 



I cannot as yet give you a full account of Stenocorus gargan- 

 icus^ of which, however, I have already a great number of 

 specimens. The first found were discovered near the centre of 

 a hickory h>g, in which they had made long galleries in the 

 direction of the fibres. Those foupd lately in numbers flying 

 near night are much larger, which circumstance would imply 

 the possibility of their growing before they came out, as the 

 first were found in winter. But the hickory and pei simmons 



