TENTHREDO VIEIDIS. 97 



tember on and under the leaves of the ash, in which it 

 devours holes. Elsewhere* in his book the same 

 author says that Letzner found the larvse on the 

 Biesengeberge at an elevation of 4000', on bushes of 

 Salix limosa, the leaves of which they destroyed. 

 They fed also on Salix aurita and 8. silesiaca. 



The pupa state is passed in the ground. 



Punctulata is more or less abundant everywhere in 

 Britain. 



Continental distribution : Sweden, France, Holland, 

 Switzerland, Germany, Italy. 



21. TENTHREDO VIRIDIS. 

 PI. VIII, fig. 4, Saw. 



Tenthredo mridis, Lin., S. N., Ed. xii, 924, 27 ; Fab., S. E., ii, 113, 

 33. 



Pz., F. G., Ixiv, fig. 2 ; Don., B. E., xiii, 23, pi. 



444; Lep. Hon., 85, 247. 



scalaris, KL, Berl. Mag., viii, 194, 138 ; Htg., Blattw., 



309, 41 ; Evers., Bull.Mosc., xx, 51, 25 ; 



Cam., Fauna, 13, 16; Stein, Ent. 



Nacht.,vi, 248 (lar.). 

 Perineura viridis, Thorns., Hym. Sc., i, 269, 9; Andre, Species, 



i, 437, pi. xxi, fig. 4, 5, and 11 ; Cat., 



52,* 4. 



Perineura scalaris, Thorns., Hym. Scand., i, 269, 10. 

 Allantus scalaris, Ste., 111., vii, 70, 38. 



Green, with a yellowish tinge ; antennae on the upper side ; an oblong- 

 oval mark on the vertex, surrounding the ocelli, with two small green 

 marks in its centre ; mesonotum, with the exception of two pairs of 

 green marks in front; scutellum, a line in front of post-scutellum; a 

 small mark behind cenchri ; abdomen broadly in the centre, a line above 

 the femora and tibiae, apex of tibiae, and of the joints of tarsi black. 

 Mandibles green, black at the apex. Wings hyaline, nervures fuscous 

 black, stigma and costa green. 



<? similar, but with the green marks on the mesonotum wider, the 

 black band on the abdomen much thinner and interrupted, and antennae 

 longer. 



Length 5 6 lines. 



A species very variable in coloration, especially in 

 the relative amount of black with which it is marked. 



* Under the name of pundata, presumedly a mistake. 

 VOL. I. 7 



