32 



setiferous varioles on the disk, and circular crowded ones on 

 the margin ; hairs long, yellow, depressed. 1 



Length neai'ly ^ of an inch. 



The tufts of ferruginous hairs within and beneath the tho- 

 racic tubercles and emarginations, as well as the small, umbili- 

 cated, anal tubercles, appear to be common to all the species 

 of this genus. 



You are certainly correct in separating Ckrysomela rhois 

 Forster, from the genus Altica, in which I had incorrectly 

 placed it from its possessing saltatory powers. The situa- 

 tion of the antennae does not correspond with that of Al- 

 lied; and this insect, with your allied species, may, for the 

 present, be placed in a subgenus of Chrysomela, forming the 

 connecting link between Altica and Chrysomela in having the 

 incrassated saltatorial thighs of the former with the distinct 

 antennae of the latter. 



HARRIS TO HENTZ. 



MILTON, Sept. 3, 1827. 



Are you not tired of the name Chremastoclieilus? Neverthe 

 less, I will once more beg your patience for a few minutes. 

 The very hurried manner in which I examined the Carolinian 

 insects for which I am so much indebted to you, must excuse 

 me for so readily taking the specimen of Chremastocheilus to 

 be identical with the one forwarded in your letter. A more 

 careful examination has nearly convinced me that it must 

 be distinct. The specimen last received has the posterior 

 tubercles of the thorax formed precisely like those of O. 

 Hentzii ; it has also on one elytra' a whitish spot, which at 

 first sight would appear to be fortuitous, but the microscope 

 shows on the other a corresponding spot, which, cursorily ex- 



1 What are the most characteristic differences between this and C- Sayi? 



