NEW BRITISH SPECIES, NOMENCLATURE, ETC. 1 33 



by a correspondent, seems to be nothing but a large-headed 

 variety. 



4. Go7iiozus claripen7iis, Forst. ( ?= G. distig?nus, Thorns.) 

 A Bettiyloid insect of this genus is in Mr. Dale's collection, 

 as I was informed by the late Mr. Haliday, who sent me a 

 drawing of its wing. The insect I have not seen, and Mr. 

 Haliday Avas not absolutely sure that it w^as not G.fusci- 

 pe?inis, Forst.; but the wing is certainly that of a Gofiiozus. 



Perisemus hyalixus, n. sp, 



P. niger, nitidus, antejinis medio, tibiis anticis, tarsisqiie 

 omnibus, testaceis ; capite et thorace aiutaceis, vage punc- 

 tulatis, siibopacis ; metathorace supra areolI triax- 

 GULARI ; alis CLARE HYALixis, stigmute et radio fnscis, 

 nervo basali angulato, extus ramifero ; abdomine Icevis- 

 simo. $ Long, li lin. 



Equal in size to the smaller individuals of triareolatus, 

 which it much resembles, but differs from (1) in having hyaline 

 wings and (2) in the structure of the metathorax. This is 

 bisected by a carina originating at the base of the petiole, 

 and forked at three-fourths of its length, so as to enclose a 

 smooth triangular space which rises slightly to meet the 

 scutellum and is emarginated to receive its apex, the tw^o 

 appearing almost soldered together. The common species 

 is without this structure, having merely a glabrous line from 

 the scutellum to about the middle of the metathorax. The 

 upper half of the metathorax is aciculated and obscure in 

 both species, except in the glabrous spaces above indicated. 

 There is one more described species, Episemus (read Peri- 

 semus) nitidus, Thoms., Ofv. 1861, p. 4-52, but this is charac- 

 terized as " capite non alutaceo," &c. 



Taken near St. Albans, June, 1873. 



