TEGEOCHANUS CEPIIEIFOEMIS. 343 



stiff spines ; slightly thickened at the ends. There is 

 a small, straight spine (possibly the interlamellar hair) 

 on the dorso-vertex just inside each pseudo-stigma ; 

 and a rather longer, rough spine outside. The dorso- 

 vertex also bears two patches of singular granular 

 markings, which look like internal organs imperfectly 

 seen through the chitin. 



Legs short, the hind pair not reaching the posterior 

 margin ; of about even thickness throughout, but the 

 joints nodose and very rough and irregular in form. 

 The tactile hairs are setiform, large and long on the 

 two front pairs of legs. Almost every joint of each 

 leg has a whorl of large hairs or spines, of which 

 those on the outer sides of the tibise and genuals are 

 mostly more or less leaf-like or serrated, particularly 

 on the two hind pairs of legs. Most of the other hairs 

 on the legs, except those on the tarsi, are spinous or 

 serrated ; the tarsal hairs are setiform, but are very 

 thick and strong, particularly on the first two pairs of 

 legs ; most of the whorl-hairs spring from chitinous 

 papillsB. 



Abdomen elliptical, dorsal surface flattish at the 

 edges, but the central part, which is in fact the larval 

 cast-skin, is considerably raised, the highest part being 

 the longitudinal median line, so that the skin is formed 

 somewhat like a ridge-roof, and to this ridge the abdo- 

 men slopes up from all sides ; but the larval skin slopes 

 more rapidly than the others. The ventral surface is 

 arched, so that the notogaster is considerably higher 

 in level than the cephalothorax. The cast notogastral 

 skins are carried, the larval forming a central elliptical 

 shield, and the nymphal skins appearing as concentric 

 rings bordering it. The margin of the larval skin 

 turns in slightly ; round it are a series of rough, 

 spinulated spines, mostly curved, and directed back- 

 ward and slightly outward, except those on the ante- 

 rior margin, which are directed forward ; all these 

 spines have a slight tendency to a leaf-like formation ; 

 and there are three pairs of similar spines, rather more 



