1873.] GENERA AND SPECIES OF ARANKIDEA. 117 



in form, the point of junction being very small ; on the inner side of 

 the tarsus and metatarsus and a portion of the tibia is a compact 

 fringe of close-set hairs. The tarsi of all the legs terminate with three 

 claws, the superior pair being slightly of an S form, the inferior one 

 much smaller and sharply bent downwards ; the tarsal claws of the 

 first pair of legs are smaller than those of the rest, those of the 

 fourth pair being the strongest and most conspicuous. 



In the form of the legs consists one of the most conspicuous re- 

 semblances between Otiothops and Palpimanus ; they are furnished 

 only (and inconspicuously) with hairs. 



The palpi are short and strong, similar to the legs in colour, and 

 similarly furnished with hairs. The radial is stronger than the 

 cubital joint, and is of a somewhat protuberant or tumid form on the 

 upperside : the digital joint is long and of a somewhat tapering 

 form ; its length exceeds that of the radial and cubital joints together. 

 The palpal organs are large and well-developed, but simple, consisting 

 chiefly of a large and nearly globular corneous lobe with some small 

 projections and spines at their fore extremity. 



The falces are of moderate size, vertical, and subcorneal in form. 



The maxillce are strong, curved, inclined towards and over the 

 labium, and considerably enlarged near the middle on their outer sides ; 

 the palpi are inserted low down and almost behind them (as looked 

 at from the underside of the spider). 



The labium is of a somewhat subtriangular form, its sides rather 

 curvilinear, and its apex pointed. 



The sternum is large and of an elongate heart-shape ; its surface 

 is covered thickly with small punctuose marks. The falces, maxillae, 

 labium, and sternum are all nearly similar in colour to the cephalo- 

 thorax, the sternum being perhaps a little darker than the rest. 



The abdomen is of a short oval form, moderately convex above, 

 blunter and slightly broader at the hinder than at the fore extremity ; 

 its colour on the sides and upperside is a deep chocolate red-brown, 

 minutely mottled with yellowish ; the epidermis is of a somewhat cori- 

 aceous texture, and sparingly clothed with short fine hairs ; when 

 looked at from beneath, the pedicle which joins it to the thorax is of a 

 shining corneous nature, of a deep red-brown colour, and continuous 

 with the similarly coloured and united spiracular plates. Continuous 

 with these and spreading upwards and forwards over the sides in an 

 oblique direction, a considerable portion of the underside of the ab- 

 domen is of a coriaceous texture and of a shining yellowish red-brown 

 colour ; behind this, for a small space towards the spinners, the 

 colour of the abdomen is pale yellowish. The spinners are two in 

 number, very short, contiguous to each other, and of a pale whitish- 

 yellow colour. 



The adult female is rather larger than the male, but similar in 

 colours and general characters ; immature examples of both sexes 

 were of a more or less pale orange-yellow colour on all the fore parts, 

 the abdomen being whitish drab-yellow. Adults as well as immature 

 examples of both sexes were received from Ceylon from Mr. Thwaites 

 in 1871. 



