115 



back and notched at the apex. The species are 1. Systella Rafflesli, 

 which is of a yellowish green colour, the fore wings being green, and 

 marked with a large ocellus in the costal area; the expansion of the 

 wings is 34^ lines. A single specimen (probably from Sumatra) is in 

 the cabinet of the Zoological Society, presented by Sir Stamford Raf- 

 fles; a second, destined for the British Museum, was collected by Mr. 

 Cuming in the Philippine Islands. (Id, i. 12, tab. iv. figs. 1 and 2). 



The second species, Systella Hopei of Westwood, is brown, the fore 

 wings being variegated with brown, yellow and whitish, and narrower 

 than in the preceding species ; the notch at the apex is not conspi- 

 cuous ; the expansion of the fore wings is 35 lines. This species is 

 Chinese, and unique in the cabinet of the Rev. F. W. Hope. (Id. i. 

 12, tab. iv. fig. 3). 



The remainder of the number is occupied by entomological chit- 

 chat. The removal of Mr. Samouelle from the British Museum : the 

 projected Encyclopaedia of generic names : Mr. Paterson's pamphlet 

 on Natural History as a branch of education : Mr. Cuming's Philip- 

 pine Island insects : the Entomological Society of London : and Dr. 

 Royle's hypothesis that silk is a modification of caoutchouc. 



Edward Newman. 



Art. XXII. — On the Aulacid.e, a family of Hymen optera pupivora ; 

 and that Trigonalys is one of its components : with the descrip- 

 tion of a British species of this genus, and incidental remarks 

 upon their collateral affinities. By W. E. Shuckard, Lib. R.S. 



My Dear Sir, Chelsea, May 6, 1841. 



It affords me much pleasure that my first contribution to 

 the 'Entomologist,' is for the purpose of introducing to your readers a 

 new native insect that must greatly interest British entomologists, be- 

 longing as it does to a genus, the affinities of which seem to have per- 

 plexed, without any reason, an English entomologist of some repute, 

 and of which genus tliis specimen is the first recorded European re- 

 presentative. I shall make no apology for not limiting mj-self to a 

 bare indication of the genus and a description of the species, but if 

 you can spare me room, I will add descriptions of some new species 

 of the typical genus, and a new North American genus closely prox- 

 imate to Trigonalys ; with remarks upon the affinities of Megalyra. 



When Mr. Westwood described the genus Trigonalys, he made the 

 following observations upon it. "Genus anomalum familige dubice. 



2i 



