E. Hargreaves 309 



Legs (Fig. 11). These consist of five segments, homologous, I should 

 say, with the coxa, trochanter, femur, tibia and tarsus, of the legs of 

 other insects. The coxa is small with a large spine on its inner side, 

 and the trochanter comparatively large. The tibia has a large spine 

 on its outer side at about the middle of its length. The tarsus is very 

 small and seems to consist of two segments, the first one bearing a long 

 curved spine externally, the second one terminating in a kind of pad, and 

 possibly being the homologue of the pulvillus or paronychium of the 

 adult, in which case it would not count as one of the actual tarsal 

 segments. 



Fig. 11. 



Antennae (Fig. 12). Each consists of three segments — the basal 

 one is broad and short ; the second is much longer and thinner, with a 

 spine placed near the middle and another at the distal end. The 

 terminal segment is twice the length of the second and terminates in 

 a fine point; there is also a spine at about a quarter of the distance 

 from the distal end. 



Vasiform orifice (Figs. 13 and 14). In one of my mounts I was 

 fortunate enough to obtain a side view, and was able to see the hind- 

 gut opening dorsal to the lingula. The lingula is a finger-shaped organ, 

 and just anterior to it. overlying the base, is a plate, the operculum. 

 The anus opens between these. 



Spines. In addition to the marginal spines there are five pairs 

 situated as follows : a dorsal short pair over the anterior end of the 

 mouth-parts ; a ventral long pair near the middle of the mouth-parts ; 

 a ventral long pair beneath the corners of the vasiform orifice ; a dorsal 



21—2 



