NOTimUS SEGNIS. 519 



about equal length. All the legs are bordered by 

 stroug, hooked spines arranged somewhat as follows, 

 viz. four on the outside of the third coxa, four to six 

 on the outside, and two to four on the inside of each 

 femur ; one on each side of each genual ; two on each 

 side of each tibia, and four on each side of each tarsus. 

 There are numerous other strong hairs and spines on 

 the tarsi. Claws tridactyle, middle claw rather the 

 smallest. 



Abdomen oblong, very long and narrow; between 

 three and four times as long as the cephalothorax. 

 Progaster almost straight, very slightly convex, con- 

 siderably raised above the cephalothorax ; lateral 

 margins almost straight, very slightly convex. The 

 postero-lateral corners of the abdomen are sharp, 

 almost pointed, and are directed slightly outward 

 (fig. 6, h). The hind margin of this projection is 

 straight or indented, forming a more or less square 

 projecting corner to the abdomen ; on the inner side 

 of this is an apophysis (c) directed backward and 

 bearing a large, thick, curved hair with short, villous 

 processes on each side (d). Between these apophyses 

 the hind margin is concave. The whole of this struc- 

 ture of the hind margin and corners is usually hidden 

 by the posterior portion of the nymphal skin (^, p, e) 

 which persists ; it covers a narrow strip of the hind 

 margin, but projects beyond it in a broad, semi-trans- 

 parent white band, with a long, irregularly conical tail 

 at each corner (jj), which contains the real corner of 

 the abdomen and its appendages, as it were, in a bag. 

 This bag bears a small apophysis {g) and a large 

 curved hair Qi) at its point. There is a shghtly 

 depressed space in the centre of the abdomen bordered 

 all round by a raised ridge ; this space has rounded 

 ends and rather curved sides anteriorly, where it is 

 widest ; but is more parallel-sided and narrower further 

 back. Outside the ridge the notogaster is somewhat 

 concave, and then rises again to the lateral and ante- 

 rior margins ; these raised edges have some vague 



