NOTICE OF THE HABITS OF CHAR^AS GRAMINIS. 199 



very thick abbreviated costal nervure, and another beneath it : 

 inferior wings membranous : posterior legs the longest, thighs 

 thickened, posterior a little thinner and bent : tarsi triarticulate, 

 2 basal joints minute, 3d rather large : claws only one to each 

 tarsus. 



1. Pusilla. Fall. Walkeri. Curt. 



Black, head shining, with a channel on the crown, the base and eyes 

 subferruginous : thorax velvety, with aureous pile, the angles on 

 the side gibbose, a large channel down the middle, and a smaller 

 one on each side : scutellum with 2 large excavations, leaving a 

 ridge down the middle : superior wings, when folded, with a 

 pearly white spot on each side the scutellum, and three on the 

 membranous apex in triangle : 1st joint of antennae and base of 

 2d joint ferruginous, legs of the same colour, tips of tarsi black. 

 (Nearly 1 line long.) 

 This remarkable and pretty little insect was first discovered 



at Southgate, by F. Walker, Esq. ; and afterwards in the west 



of England, by J. C. Dale, Esq. It inhabits ponds, where it 



is found on duckweed. 



Art. XX. — Notice of the Habits of Charceas Graminis, 

 8[c. By George Wailes, Esq. 



[to the editor of the entomological magazine.] 



Sir, — I beg you will correct an error in my list of Castle 

 Eden insects, published at page 41, by substituting Emmelesia 

 toeniata for E. ericetata. Upon a re-examination of my captures 

 at that place in 1831, I have detected another specimen of the 

 above moth, though, from the injury it received in the capture, 

 I was unable to ascertain its name at the time. I met with it 

 near the top of the north branch of the Dean, where the yews 

 almost totally exclude the rays of the sun. On a trip to the 

 Dean in August last, in company with my friend, the Rev. 

 G. T. Rudd, I took a remarkably small specimen of H. Blan- 

 dina, measuring only one inch five lines from tip to tip. It 

 was quite perfect, and had just quitted the pupa state. I 

 mention the circumstance, because it has been reported that 



