Except in the cabinets above recorded, I know of no British 

 specimens of this valuable genus, of which Dr. Leach in the 

 Zooloo-ical Miscellany mentions 2 species that were first de- 

 scribed by Linnaeus ; and from our finding males only of the 

 one and females of the other, it is exceedingly probable they 

 are the same species, notwithstanding their dissimilarity, which 

 would render the specific name of " dispar" more appropriate; 

 the fact, however, of their being the same is not proved ; and 

 if it should hereafter, I would strongly recommend that the 

 name which Linnaeus gave to the male might be adopted, 

 ^^ AmerincE" being descriptive of the locality of the insect; for 

 we are informed by authors that it inhabits sallows, living in 

 society, and eating the edges of the leaves of those trees. 



Clavellaria Amerhice Linn, has been twice taken at Windsor 

 in June : a figure of it will be found in Panzer's FawKS Ger- 

 vianica, fasc. 65, pi. 1. mas. 



C. marginata Linn, is also figured by Panzer : the specimen 

 represented in our plate was taken at Windsor also in June, 

 by Mr. Griesbach. 



The absence of the membranaceous covering as well as the 

 slight emargination at the base of the abdomen, and the an- 

 tennae being composed of fewer joints and a longer club, are 

 characters to distinguish Clavellaria from Cimbex and the 

 neighbouring genera, no less than the organs of manducation; 

 and the extraordinary length of the jaws in the males is not 

 less characteristic. If then there be good characters to es- 

 tablish so many genera, (and that there are, no one can doubt, 

 when it is recollected that Dr. Leach in the division of Cimbex 

 employed only external distinctions,) the group with clavate 

 antennae, viz. the Citnbices, will form an excellent family; and 

 the oeconomy of the Tenthredinidce, as well as their peculiar 

 structure, may render it advisable in a more advanced stage 

 of science to separate them from the Hymenoptera and form 

 them into a new order, an idea which has long been enter- 

 tained by various authors. 



Pyrola media (Intermediate Winter-Green), from the heaths 

 in the north of Perthshire, appears to be the plant figured. 



