May, 1902.] 97 



processes, beneath the anal plate, which look from beneath as if there were a ventral 

 anal plate precisely like the dorsal one, except that it is deeply cut into two lateral 

 portions. No hooks or other holding arrangements are detected here, but the 

 appearances suggest that their processes, and the dorsal one form three fingers that 

 hold on in some way, especially as the larva so often quits its case partially or 

 completely. The arrangement of these processes with chitinous plates outside, and 

 soft tissue within, is a peculiar one, not exactly like any other observed by reporter, 

 except in A del idee. 



The head is black, with various longish hairs, jaws brown, the two terminal 

 divisions of maxillae with a row of processes and hairs eight or nine in number. 

 The second joint of antennas carries a very long hair, a small process or mammilla, 

 and third joint, which again carries a fleshy mammilla and two hairs. The labium 

 has a large spinneret between the palpi. The true legs are strong, consist of the 

 usual basal plate and three joints, which taper regularly from base to the terminal 

 claw, they carry a good many hairs. The claws are well curved, and are accom- 

 panied by a large " battledoor " palpus, nearly half as long again as the claw, and 

 spreading out to a width almost equal to its length, it is longitudinally striated, and 

 its form is very much that of a moth's wing, such as a Pyraustid. 



Ventrally the ganglia are very obvious, and the ventral prolegs are represented 

 each by two rows of hooks. The hooks hardly deserve to be so called, they are 

 black corneous dots, each with a free point directed from the centre line of the pro- 

 leg. The proleg itself is merely a fulness of the segment, but has no sort of base, 

 pedicel, &c. 



The numbers of the hooks is very variable and irregular. For example, the 

 fore and back hooks of the legs in two specimens counted were 4 legs (2 each 

 specimen) of 7th segment : 



2 2 3 O 



2 T ~S O 



of 8th segment : — 



£ s Jt A 



4 3 3 2 



of 9th segment : — 



1_1 s. i s. 



+ 3 3 3 



of 10th segment : — 



e U a. js 



O 8 4 3 



A specimen in water on a slide shows the whole internal anatomy, the cardiac 

 vessel and circulation, the nervous chord and ganglia, the whole of the ramifications 

 of the tracheal system to great minuteness, the intestinal canal, various glands, 

 tubes, &c. 



The young larva in its first (and second) instar exactly resembles the adult 

 larva, except that there do not appear to be any hooks to the prolegs, if prolegs 

 indeed exist, and that the claws of the well-developed true legs are very curved, 

 almost sickle-shaped. The four teeth of the jaws are also, perhaps, much larger 

 proportionally. 



Pupa— The pupa is very delicate and pale, but has brown chitinous coloration 

 of the very numerous dorsal spicules, and to some degree of the appendage cases. 

 It is 3-5 mm. in length, and -66 mm. broad, and fairly cylindrical. 



The segments 7, 3, 9, 10, abdominal, are fixed in the female, 8, 9, 10 in the 

 male. The first abdominal segment is almost certainly fixed, the second appears to 

 be so, but has an armament of dorsal spines almost like those following. I detect 



