20 PROCEEDINGS OF THE 



imago appears two or three weeks after pupation ; from the 

 autumnal one the larvae remain unchanged during the winter 

 till the following spring. The cocoon in confinement is spun 

 between the leaves ; in a state of nature, in the earth. It is 

 double ; the outer covering, which is transparent and thin, is 

 separated by a small space from the inner one, which is much 

 finer and of a more compact texture. Both coverings are of a 

 dull grey colour. According to Brischke (loc. cit. supra) the 

 cocoon is simple, but certainly as a rule it is double. 



The larva is flat, moderately narrow at the 2d segment, and 

 from that increasing in breadth until past the middle, from Avhich 

 it again slightly decreases towards the anus. The head is small, 

 shining, covered sparingly with longish hairs ; the ground colour 

 is green, but obscured with numerous small brown dots, closely 

 packed together ; across the face there is a semi-circular brown 

 mark of a deeper colour than the other dots on the vertex ; the 

 eyes deep black, the mouth brown. The body is entirely deep 

 green, sometimes having a yellowish tinge. On each segment 

 there are three rows of tubercles, from each of which projects a 

 long black hair; the feet are glassy green with brown claws. 

 The colour of the head varies ; when the creature is young, it is 

 browner than when full fed, at which time the whole body 

 assumes a much brighter green colour. Length 7-8 lines. 



The pupa I have not noticed when very young; when I did see 

 one, it was of a grey colour. The egg-laying I have not observed, 

 nor have I bred any parasites from the larvae. 



This species is tolerably common in Britain, appearing often in 

 gardens. It has occurred from the south of England to Strath- 

 glass, in Inverness-shire. Its distribution extends all over the 

 continent. 



B Male with the antennae as long as the body, covered with a longish pile ; 

 the 3d joint at the base produced into a knob; the 4th, 5th, and 6th joints 

 not produced into a spine above. Cerci short — {Trichiocampus). 



a. Labrum, apice emarginated. Ejnstoma keeled. 3d antennal joint 

 in the female scarcely curved. Patellae of tarsi large. Abdomen 

 ochreous. 



2. C. VIMINALIS. 



Tenthredo viminalis, Fallen, Acta Holm., 1808, 117, 59. Nematus 

 grandis, Lep. Mon., 61, 179; F. Fr., pi. 10, f. 1. Cladius luteiventris, 

 Dahlb. Consp., 69 ; Prod., 103, 3. C. luteicornis, Ste., 111., vii., 



