278 EK'NEST WAEREN. 



The Larva. — In the case of No. 5, where one caterpillar 

 hatched^ the moths Avere paired on October-9th and the larva 

 hatched on November 16th, thus the development occupied 

 a period of thirty-eight days, while the time taken by a 

 batch of pure-bred eggs was only twenty-five days, a differ- 

 ence of thirteen days. Strictly speaking, about four days 

 should be deducted from the periods of thirty-eight and 

 twenty-five days as representing the time between paii-ing and 

 the actual laying of the eggs. 



On hatching, the young larva was singularly lifeless and 

 languid. It was carefully placed on the leaf of Fie us 

 cordata, but during the first day it refused to feed. Sub- 

 sequently it fed to a slight extent, but no appreciable growth 

 occurred, and the creature died on November 26th, living just 

 ten days altogether. 



The larva passed but very few ftecal pellets, perhaps seven 

 or eight altogether, and these did not appear to be normally 

 black, but they were greenish brown and irregularly shaped. 

 It would seem that the digestive functions were not normal. 



In general aspect the larva was indistinguishable from that 

 of a pure-bred menippe, but on closer examination it Avas 

 seen that it was not quite normal. Some of the hairs Avere 

 less black than in the majority of young menippe larvse that 

 I have examined; also several of the tubercles bearing the 

 long hairs of the body Avere yelloAvish and translucent instead 

 of being black and opaque. The lateral, roundly triangular, 

 black, raised areas at the extreme posterior end of the body 

 were rather smaller than normal, and the one on the right 

 hand side was only black around the periphery, the central 

 portion being pale. The posterior right thoracic leg Avas 

 pale broAvn instead of dark brown or black. The median 

 dorsal raised area over the anus, Avhich bears tubercles and 

 hairs, did not project posteriorly as far as usual, owing to its 

 antero-posterior median axis being exceptionally short. In 

 addition to these peculiarities the penultimate segment of the 

 body and the segment in front Avere not separated off from 

 one another on the right side of the body, and on this side 



