134 [November 



Tortrix sorhiana, H. — I have repeatedly attempted to rear a larva 

 which, from its large size, must be that of sorhiana, but with the in- 

 variable result of obtaining a bunch of ichneumon cocoons. This larva 

 measures one and one-third inch, and is very active and stout — thickest 

 in the middle — with swollen segments. Colour, dark olive-green, 

 tinged on the back with smoky-blacli, spots white with white hairs; 

 head flattened, black ; dorsal plate light olive-brown, spotted with 

 blackish, and divided down the middle, and having a white collar ; anal 

 plate greenish ; feet black. EoUing up leaves of oak in the first half 

 of June. 



Zeller says : " dark grey or bluish-grey, with white dots, head 

 glossy black, neck brown, pupa black-brown." 



Tortrix cosfana, Sch. — Larva not very active, cylindrical, but 

 rather tapering at both extremities, dorsal region of a dark, smoky, 

 olive-green colour, below the spiracles greenish-white, spots distinct, 

 whitish, with short hairs ; head and dorsal plate black ; anal plate 

 greenish-grey. This larva was found on a Gentaurea in the garden, 

 but it is also found, not commonly, in the neighbouring marshes in 

 June. 



The pupa is blackish, enclosed in a white loose cocoon. 



This larva (evidently, when younger) is described by Moritz as 

 grass-green, with darker internal dorsal vessel ; head yellow-brown, 

 dotted with darker brown ; dorsal plate with a brown spot on each side. 



Tortrix Podana, Scop. — Toung larva active, cylindrical, pale yel- 

 lowish ; head and plates black ; anal plate very small. Full-grown 

 larva nine or ten lines in length, stout, but rather attenuated at anal 

 extremity, yellowish-green with a tinge of pea-green on the hinder 

 part of each segment, spots invisible, hairs rather long ; head shining 

 brown, Avith darker jaws ; dorsal plate black, with a white collar ; anal 

 plate green. April to June. 



According to Tischer, it is " glossy gi'een-grey, with raised spots 

 of the same colour, having black central dots ; head and anterior feet 

 black, and a little black shield above the anal feet ; doi-sal plate black- 

 brown, suffused with ^^ale brown in front." 



Wilkinson's description differs from both the above in part, and 

 in part agrees with both, demonstrating the variability of the species. 



Tischer says that the pupa is brown, with beautiful grass-green 

 wing-sheaths. This I have not observed. 



Tortrix xylosteana, L. — AVhcn young the larva is slender, and 





