346 Mr. F. O. P. Cambridge on the 



ance several other species from the same regions. The figure 

 of the vulva and pedipalp should, however, render the identi- 

 fication of either sex comparatively easy. 



Ctenus sarawnkensiSj sp. n., ? . 

 (PI. IV. fig. 3.) 



Ilab. Sarawak, Borneo. 



Types in coll. 13rit. Mus. Nat. Ilisfc. (e coll. Hose). 



? . Tot. len. 15*5 mm., carap. 7 ; legs i. 21, ii. 19, iii. 17, 

 iv. 24; ant. raarg. of carap. 3; pat. + tib, i. 7*5, iii. 5, iv. 7. 



Colour similar to that of Ilosei. Pubescence of abdomen 

 copper-coloured, with traces of dorsal and ventral blotches 

 as in the other species. 



Structure. Spines and general characters similar to those 

 of Thorellii. Carapace slightly gibbous behind and abruptly 

 inclined to base. 



Vulva longer than broad, disk broadly transverse and 

 uniformly convex, narrowed before and behind, with a wedge- 

 shaped raised carina anteriorly. Margins of disk black and 

 coriaceous. On each side of the posterior margin lies a long 

 sinuous dentate process, their apex extending distinctly be- 

 yond the posterior margin of disk and slightly converging. 



Though scarcely distinguishable in general characters, 

 except for their smaller size, from Hosei^ Thorellii^ and others, 

 tlie form of the vulva furnishes evidence that they are 

 distinct from these other forms. 



Three females, taken by Mr. Hose at Sarawak, Borneo. 



Ctenus ceyJonensis, sp. n., J ? • 

 (PL IV. figs. 12, 20.) 



IIaJ>. Ceylon. 



Type in coll. Brit. Mus. Nat. Hist, (e coll. Barnes). 



cJ. Tot. len. 13 mm., carap. Q'6', legs i. 26, ii. 2-1, iii, 20, 



iv. 28 ; ant. marg. of carap. 3 ; pat.-f-tib. i. 9, iii. 625, iv. 8*5. 



$. Tot. len. 18 mm., carap. 7"25 ; ant. marg. of carap. 



3*5; legsi. 21*5, ii. 20, iii. 18, iv. 24 ; pat. + tib. i. 7, iii. 5'5, 



iv. 7. 



cJ. — Structure. Spines and general characters as in 

 Thorellii. Carapace gibbous behind, abruptly inclined to 

 base. Eyes: second row straight by centres ; ocular quad- 

 rangle broader than long, narrower in front; post, centrals 

 one half larger than ant. centrals, two thirds a diameter apart, 

 distant from lat. ant. half a diameter of the latter; ant. 

 centrals half a diameter apart, one diameter from anterior 

 margin of clypeus. 



