148 THE entomologist's record. 



and some few have lost all other pale markings, but most have 

 a pale ring round the posterior trapezoidals in 6.7, 10. 11, 

 some also in 8 and 9, and in some few the pale mark extends to 

 the supra-spiracular. The most conspicuous hairs are black, 

 but pale fuscous hairs are more numerous than the black on the 

 posterior trapezoidal and sub-spiracular tubercles, and some 

 exist on the anterior trapezoidal. In a few specimens these 

 hairs are of the ruddy ochreous tint assumed in the last skin, 

 giving a red tone to the larva and obscuring the black hairs. 

 There is a pale dot, apparently a tubercle, on the anterior 

 margin of each segment (6-12) just opposite the line of the 

 posterior trapezoidal. I have not observed this dot in the other 

 species, probably through not having looked for it. The 

 posterior spiracular still has one pale hair. Some black hairs 

 on 3.4. 5 and 12 are very long and paler towards their tips. 

 The red lateral line is a series of dashes behind the sub-spira- 

 cular tubercles on 3-12, and in front of it also on 6-12: head 

 black as throughout. 



In the 5th skin (15-20 mm. in length) there are three types. 

 In one the larva is jet black, with only a little paler tint at the 

 incisions, and the hairs are either black or dirty whitish ; on 5 

 and 12 the hairs are entirely black, making these segments look 

 larger, and giving a ru7?tic{s aspect which the actual relative 

 size of these segments does not justify ; in the other two 

 varieties these segments do not look larger than the others, and 

 the rumicis outline is now lost. 



In the second var., very few hairs are quite black, the majority 

 are pale brown, the skin of the larva is also browner, and the 

 general facies is more nearly that of the adult larva. The third 

 var. is intermediate between these ; segments 5 and 12 are 

 blacker than the others, the remaining segments have more 

 black hairs than in var. 2, and the coloured hairs are paler. 

 None have any markings except the red lateral spots, which 

 are dirty brick red in vars. 2 and 3, but in var. i of a rich pink 

 red. The spot behind the spiracle is in some divided into two 

 portions, suggesting tridens. One larva (var. i) has no pale 

 hairs on the inner half of the anterior trapezoidal, and looks 

 therefore as if it had a broad black dorsal line ; one or two are 

 quite black, and with the carmine lateral line and silver-white 

 spiracles, have a brilliant appearance much in excess of the 

 others. 



All make a pad of silk on which to moult, this is indeed 

 invariable throughout the whole genus ; one or two of this 



