1869.] Indian Arachnoidea. 213 



this genus the segments of the body are distinctly traceable above, while 

 in Gagrella the upper surface is almost uniformly coriaceous, only the 

 terminal portion consisting of distinct segments. As regards the position 

 of the eyes with their smooth margins, and also as regards the form of the 

 palpi, falces, feet, &c, both genera are much alike. In Gagrella the, meta- 

 tarsal and tarsal segments are very numerous, differing with the length 

 of the feet ; the former vary from 5-8 on the 1st and 3rd pair of feet, 

 and from 7-15 on the 2nd and 4th pair, the latter vary from 20-30 on 

 the 1st and 3rd and from 30 to about 100 on the others ; all the joints 

 of the tarsi become very gradually shorter towards their terminations, 

 and each of the tarsal and metatarsal parts is provided at its end with a mi- 

 nute spine. Herbst described from the East Indies a hrownPhalanpum 

 monocanthum which has the thorax posteriorly truncated. Koch describ- 

 ed from Bombay an Acanthonotus niger (Arach. xvi, p. 6l, p. 159, p. 

 1541) which also differs from the next species in the form of the body. 



Gagrella atrata, Stol PL XVIII, Fig. 2, Pi. XX, Fig. 11.* 



The whole body is finely granular, above entirely black, below ashy or 

 brownish ; the falces or cheliceres, the two terminal segments of the 

 palpi, the anterior small portions of the femora and the tarsi yellowish 

 or pale brown, the rest of the feet, &c. blackish brown. 



The cephalothorax is somewhat semilunar, convex, in front 

 provided with two short spines, at the lateral edges emarginated 

 opposite each coxa; posteriorly it is concave, with a double raised margin ; 

 the tubercle, bearing the eyes laterally, is situated somewhat below the 

 middle : it is narrow at the base and furrowed along the middle. In 

 front and at the sides of the ocular tubercle there are, besides, some 

 indistinct depressions on the surface of the thorax observable. 



The falces are thin, equal to about two-thirds of the length of the 



palpi, with the terminal claws brown. The palpi are also slender and a 



little shorter than the body, terminating with a single strong claw. — 



The lip is very small, the so-called maxillae rather long, and in 



common with the projecting bases of the palpi provided with short 



soft papilla?. The sternum is long, broader posteriorly, slightly 



concave at the sides and with the front edge, under which the sexual 



opening is situated, somewhat raised. The coxa? are long, depressed, 



* This represents a more common variety with a shorter body, than the one 

 shewn in Fig. 2, PI. XVIII. 



