346 EKNEST WARRIiN. 



The long seta is undoubtedly an important tactile organ; 

 it is shown in section, together with the " olfactory tooth," in 

 PL XVII, fig. 23a. 



The antenna of Corotoca larva is similar, but the joints 

 are much shorter. 



Mandibles. — Pointed, curved, stout, edentulate ; closely 

 similar to the mandible of imago ; provided with strong 

 muscles (PI. XX, fig. 86, md.). 



Maxilla 1. — A large, massive, setose palpiger is fused 

 with the stipes. The palp consists of three rather short, 

 setose joints; the terminal joint is thin and conical and bears 

 a seta in a notch on the outer surface. The stipes also 

 carries a somewhat coarse lacinia bearing a comb of stiong 

 setee in an irregular or double row (figs. 85 and 86). This 

 appendage closely resembles that of the larva of Corotoca as 

 figured by Schiodte. 



Maxilla 2. — Ligula and palpigers form a simple plate 

 carrying a pair of very short, 1-jointed palps on the posterior 

 sui'f ace and several setee; mentum bears a number of seta? ; 

 submentum wide with two setse (fig. 86). In Corotoca 

 larva the labial palps are figured as 2-jointed, while in the 

 imago they are 3-jointed ; in Paracorotoca they are 

 single-jointed in both larva and imago. 



Legs. — All three legs are very similar to one another; the 

 3rd pair are the longest (figs. 87a, b, c). They consist of a 

 short, fairly stout coxa, medium-sized trochanter, and a 

 long femur and tibia. Terminally there is a long, curved 

 claw with a notch on the inner side bearing a bristle. All 

 the joints are setose. In Corotoca larva the femur is 

 figured as being relatively very stout, and is only about one- 

 half the length of the tibia, while in Paracorotoca larva 

 the femur is only slightly shorter than the tibia. 



2. Inteenal Anatomy. 



Hypo dermal Glands. — These are well-developed in the 

 larva. Between abdominal segments III-YIII there are 5 

 mediaUj dorsal, inter-segmental, deep grooves lined by a tall, 



