Fobnuiry, 1870.] 193 



tarsi. Atratula 1 do not kno\Y ; but, as it is described aa having only 

 the anterior tibitc luteous, it can scarcely be confounded witli our 

 insect. The wings in cethlops are darker at the base, and do not differ 

 essentially from those of testaceipes -. in cinxia the wings are darker 

 in the middle. It is unnecessary to distinguish it from E. annulipes, 

 varipes, and adumbrata, as they are readily known by having two middle 

 cellules in the posterior wings, while in the present species and its 

 allies there is only one cellule. 



In the same papers, Prof. Westwood states that E. cethiops is 

 distinct from the cetliiops of Klug and Hartig, which is a, Blcnnocavijm, 

 and he further mentions that the slimy larvje of the pear (commonly 

 called in England " Selandria cerasi,'' notwithstanding that the cerasi 

 of Linne has luteous legs) pertain to the Selandria atra of Stephens. 

 I do not mean to question the accuracy of this observation, and it is 

 likely enough that «^r« is really attached to the pear ; but my own ob- 

 servations (agreeing with those of continental observers) undoubtedly 

 lead me to conclude that the common gai'den pest is, in point of fact, 

 the Eriocampa adumbrata of King. According to Thomson (Hymen. 

 Scand., i, 213), the cEtliiops of Klug is a variety of Blennocampa epJiip- 

 pium, Pz., with the pronotnm black ; and I believe he is quite correct. 

 Until I see Stephens' types of atra, I can say nothing definite regarding 

 it. I recommend the careful breeding of the slimy larvae of the pear 

 and plum trees to those who may have the opportunity of doing so, 

 and thus settle once and for all the question whether they belong to 

 species other than Eriocampia admnhrata, and if so, to ascertain how the 

 larvae of the different species may be distinguished from one another. 



To Professor AVestwood's account of the habits of cethiops, I can 

 add nothing, beyond confirming it ; but I may mention that Mr. 

 Pletchcr's larvae remained eighteen months and mine two years in the 

 cocoons before changing. 



I have bred E. annulipes from slimy larvae on Salix viminalis, and 

 Mr. Fletcher bred E. varipes from like larvae on the oak. "We have 

 thus in Eriocampa three different kinds of larva?, namely : slimy larvae 

 like those of adumbrata, the yellowish-green slimcless larva of cethiops, 

 and the white flaky larva of ovata. 



Ilartig's system of genera and sub-gcncra is apt to lead to groat 

 confusion, and I hope that for the future his named sections will 

 be regarded as distinct genera, more especially as they can all be eacily 

 made out. 



G-lasgow : November, 1875. 



