The Life-history of an Aearus, dec. By A. D. Michael. 387 



on the upper side of the tibia of the second leg ; but all these have 

 plain edges without spikes. The under side of each tarsus termi- 

 nates in a short, stout, recurved point or hook. There is a very long 

 tactile hair on the tibia of each first leg, springing from a large 

 papilla ; and there are a few other fine hairs on the tarsi, and a 

 short thick hair on the upper side of the tarsus of the second leg. 

 There is a curved, strongly serrated hair on the upper side of the 

 second joint of the same leg ; a curious curved hair with a few very 

 long pectinations on the under side of the tibia of the third leg ; 

 and a rough, club-like hair on the under side of the third joint 

 of the same leg. There are a few other hairs of minor im- 

 portance. 



Abdomen almost elliptical, but somewhat prolonged an- 

 teriorly, the hind margin rounded and entirely devoid of the bi-lobed 

 shape of the female. The centre of the notogaster is arched, but 

 not strongly so ; the margin is very slightly raised, and usually has 

 a few wrinkles in addition to its otherwise rough texture. There 

 are a paii- of short points at the antero-lateral angles, and two pairs 

 round the hind margin. The anal arrangement is similar to that 

 of the female, but smaller. 



The Nymph (fig. 5). 



Colour pure white when young, rather yellowish-white when 

 fully grown. 



Texture dull, semi-transparent, finely but irregularly 

 wrinkled. 



Cephalothorax large, fully one-third of the total length ; 

 its hinder part as wide as the abdomen. Eostrum rather concave, 

 blunt ; rostral hairs thick, almost leaf-like. Behind the rostrum is 

 usually a transverse ridge with returned ends. The dorsal surface 

 of the hinder part of the cephalothorax is ornamented or protected 

 by numerous small plates of clear colourless chitin, of various shapes ; 

 the arrangement of these plates is usually about as follows, viz. : 

 commencing from the rostrum, a comparatively large shield-shaped 

 plate in the median line with a curved, more or less triangular 

 plate on each side of and partly behind it ; then a transverse row 

 of about five smaller round or oval plates ; and further back still, 

 close to the abdomen, a second row of about eight plates, of which 

 the two outer are the largest and are usually oval ; the next pair 

 smaller, and of the pine-shape, common in the patterns on Indian 

 textile fabrics ; and the two inner pairs very small and round. 



Legs of moderate length, the fourth pair not reaching the 

 hind margin, thinnish, coxae rather large, other joints of about 

 even thickness throughout, except the tarsi, which diminish gradu- 

 ally. There are the usual tactile hairs on the tibiae of the first two 



