NOTHIiUS THELBPllOOTUS. 623 



longisli. Tarsi short and round. There is a short, 

 thick, curved, spatulate hair on each side of each of 

 the three central joints of the two front pairs of legs, 

 and a second similar hair on the outside of each femur, 

 aud similar hairs on the outer edges of the two hind 

 pairs of legs. The tactile hairs are small. Tarsi with 

 fine hairs as usual. Claws large and distinct, tridactyle. 

 Abdomen entirely hidden by the cast notogastral 

 skius of the larva and nymph, which are nearly, but 

 not quite flat. The larval skin is somewhat raised and 

 arched. The nymphal skins are flatter, but turn down 

 at the edges and have a tendency to turn upward at 

 the posterior end. Progaster of each skin almost 

 straight, then the skin increases gradually with a 

 curved (convex) lateral margin for nearly two -thirds 

 of its length, then finally it narrows, at first with a 

 strongly convex margin, but at the hinder end it is 

 drawn out into a loug rounded point, the sides of which 

 are concave, and which bears two spatulate hairs at 

 the tip. The larval skin is bordered by an irregular 

 raised fold or roll, formed by the shrinking of the skin 

 after it is cast ; inside this there are three or four irre- 

 gular transverse ridges on the anterior portion of the 

 skin, and behind them is a large, raised, rounded, 

 inversely bell-shaped portion. This skin is rough, 

 with irregular short rugosities. The nymphal skins 

 are coarsely areolated, the areolations shallow, and 

 largest on the most mature skins. The skins are not 

 quite centrally placed, each a little more backward in 

 position than the earlier skin, so that a wider portion 

 of each nymphal skin is shown anteriorly than poste- 

 riorly, but yet the posterior edges do not overlap. 

 There is a nearly straight, transverse, linear ridge a 

 little behind the progaster of each nymphal skin ; this 

 ridge runs backwards at the ends, and fades into tho 

 lateral outline of the skin. Ventral surface rough. 

 Genital and anal plates large, close together ; the 

 former shortly and widely pyriform, /. e. somewhat 

 widest posteriorly, the latter pentagonal. 



