DIPHTHERA ORION. 



In colour the ground on the back of the second and 

 third segments is blackish- olive, on the fourth it is 

 blue-black, on the others, as far as the twelfth, deep 

 velvety black, the thirteenth drab colour. A large, 

 broad, pale bright yellow transverse patch is on the 

 back of the fifth, seventh, and tenth segments, which 

 strikingly relieves the velvety-black ground ; the sub- 

 dorsal line is a broken series of pale yellow spots, and 

 is followed by two other broken lines of similar spots ; 

 the former are absent on the fifth and show but little 

 on the sixth segments. 



Along the side the ground colour is olive-drab, and 

 bears three longitudinal stout lines or stripes, of sub- 

 dued yellowish or a greyish-yellow ; the oval blackish 

 spiracles, ringed with this yellow, are along the middle 

 one. The lower part of the side and belly are drab 

 colour, becoming dusky on the anterior segments ; all 

 the legs are drab, and the ventral and anal feet 

 remarkably wide and furnished with numerous fine 

 hooks, which with the feet are very pale drab, and the 

 legs shining. The head is also shining, the top of 

 each lobe black ; below on each light yellow, thickly 

 spotted with black, the base of the papillse pale yellow. 



On each segment is a transverse row of ten bright 

 red, wart-like tubercles, bearing fascicles of light 

 warm-brown, longish hairs, the two dorsal pairs of 

 these being close together, and nearly in the transverse 

 line, the anterior ones the smallest ; the pale yellow 

 patches have these tubercles of their yellow colour and 

 rather smaller, but with brown hairs like the others. 

 The subdorsal spots on the twelfth segment are 

 greatly enlarged ; on the back of the fourth segment 

 they form transverse streaks behind the red warts. 

 On the second segment is a narrow transverse bar of 

 shining blackish, bearing a series of four red warts, 

 The pattern on the thoracic segments is rather ob- 

 scured by the long hairs, the anterior ones projecting 

 over the head. 



This larva spun itself up in a cocoon, in which the 



