ENDROMIDyE. S3 



stripes, quite to the prolegs. A broader aud whiter stripe 

 from the side of the head continues along the sides of the 

 nest three segments. On the twelfth segment one of the 

 yellowish oblique stripes is followed by a broad deep yellow 

 one, pointing towards but not reaching the anal prolegs ; 

 from this a curved yellowish stripe proceeds upward to the 

 apex of the tubercle ; legs pale greenish ; prolegs very large, 

 deep green with the feet crimson. Spiracles white, edged 

 with black ; spiracular region broadly and plentifully sprinkled 

 with black atoms. 



When very young the larva is black with dull greenish 

 dots; after the first moult dull green dotted considerably 

 with black ; at the third moult paler green. Up to this 

 stage it is gregarious in small companies. From this stage 

 the black dots disappear as the adult colouring is assumed, 

 and the larv« gradually scatter, to feed separately, preferring 

 the shade. 



End of May to the beginning of July, on birch. 



Pupa dull brown ; head portion projecting forward with a 

 rim-like edge, front of thorax concave, the leg and antenna 

 covers lying very closely in the hollow ; dorsal portion ex- 

 tremely convex ; incisions of abdominal segments very deep ; 

 anal segment with a conical projection ; dorsal portion of the 

 abdominal segments covered with fine bristles. In a strong- 

 tough cocoon of large size, composed of a network of silk, 

 through which the pupa is plainly visible. This cocoon is 

 concealed by being covered with moss. Mr. Buckler says 

 that about a week or ten days before the time of emergence 

 the cocoon is pushed by the pupa from a prone to a vertical 

 position, the upper end of the cocoon is ruptured and the 

 pupa protrudes its head through the opening and continues 

 to advance until it is exposed as far as the end of the wing 

 covers and remains thus until the insect emerges. For 

 this purpose the bristles on the abdomen are admirably 

 fitted in connection with the very free and mobile segments. 



