220 Mr. R. I. Pocock on 



scopulation of the protarsi and tarsi of the first and second 

 legs, makes the identification of the two types as co- 

 specific extremely hazardous. Moreover, the spinners of 

 P. Abrahami, as represented in fig. 4 e, showing the anterior 

 pair to be much longer than broad and subcylindrical, and 

 the nearness of the eyes of the anterior line, as shown in 

 fig. 4 b, make such a reference of the species here described 

 impossible. The vulva of P. Abrahami also appears to be 

 different. 



Lastly, according to Simon (Hist. Nat. Araigne*es, i. 

 p. 342 &c.) the superior edge of the lower surface of the 

 mandible presents only rudimentary teeth. This statement, 

 I venture to think, applies not to the single largish tooth 

 present in P. laterigradus, but to the papilliform supports of 

 the hairs, which M. Simon describes as granules. Conse- 

 quently since neither Mr. Cambridge nor Mons. Simon 

 detected in P. Abrahami the tooth that I have described in 

 laterigradus, one is compelled to assume that it is absent in the 

 former species. 



Platyoides jjusillus, sp. n. (PI. VIII. fig. 13.) 



Colour. Carapace yellowish ochre-brown, with narrow 

 blackish rim ; legs practically a uniform ochre-yellow, the 

 femora not noticeably paler than the remaining segments ; 

 abdomen testaceous above, clouded with fuscous at the sides. 



Carapace about as wide as long, a little shorter than 

 patella and tibia of first leg ; eyes of anterior line subequally 

 spaced, the medians about their own diameter from the 

 laterals. 



Legs as in the preceding species, but with the setas more 

 rigid, those on the lower side of the tibias and protarsi of the 

 first converted into spines ; protarsi and tarsi of first and 

 second without scopulate hairs. 



Vulva as in PI. VIII. fig. 13. 



Measurements in millimetres. — Total length 7 ; length and 

 width of carapace 23. 



Log. Estcourt, 4000 feet (G. A. K. Marshall). 



This species, based upon a single immature female, may, 

 apart from the form of the vulva, be readily distinguished 

 from laterigradus as follows : — 



a. Carapace narrower, noticeably longer than wide; 

 distance between anterior median e} T es only about 

 half as great as that between median and lateral ; 

 protarsi and tarsi of first and second legs lightly 

 scopulate, tibipe and protarsi of first not spined: 

 length of adult 18 mm laterigradus, sp. n. 



