﻿June, 1895] Dyar. Notes OX Drepaxid Larv.^. 61 



feet and the presence of a longer or shorter tail-like process at the end 

 of the last segment. The crotchets of the abdominal feet are peculiar, 

 as they are arranged in a complete circle, such as is found in the Micro- 

 lepidoptera, except that the crotchets on the outer half of the foot differ 

 from those on the inner half. This seems to show that the structure is 

 a case of secondary adaptation. 



The eggs are indistinguishable from Geometrid eggs. 



Oreta rosea Walker. 



This is the most specialized larva. It is curious that the moth 

 should belong to a genus found in India, yet there seems no essential 

 structural difference. 



The little larvae may be found not uncommonly on all the species 

 of viburnum. When newly hatched, the setae can be made out, ar- 

 ranged in the normal manner of the Noctuina, iv behind the spiracle, 

 vi absent. There are no secondary hairs, though the body is minutely 

 roughened. The sets are very short with enlarged tips. After the 

 first moult the primary setje become obscured by secondary ones, and 

 later the larva is much roughened and its surface greatly modified. 

 The larva lives freely exposed. 



Platypteryx arcuata IValker. 



As regards the length of "tail" this larva comes next, though in 

 other characters it is more generalized than the following species. It 

 has been fully described by Dr. Packard, but I believe the organ with 

 which it produces its scratching sound has not been mentioned. The 

 larva curls up the edge of a leaf of birch or alder by drawing threads 

 over it, and covers the exposed upper part with a coarse netting. When 

 disturbed, it contracts its body repeatedly, producing a scratching 

 sound. The sound is caused by the friction on the leaf of two stiff 

 shovel-shaped setae, situated at the end of the last segment below the 

 tail-like process. The primary setae are distinct in the last stage, though 

 supplemented by secondary ones. 



Falcaria bilineata Packard. 



This larva lives freely exposed on the leaves or stem of the white 

 birch. The "tail" is short and upturned. The setae are as in the pre- 

 ceding. I have recently described it. 



Eudeilinea herminiata Gnefiee. 



These curious little larvae are common on the bushy species of 

 dogwood {^Corniis stolonifera, C. paniculata'). They live singly, spin- 



