402 ^Ir. F. P. Cambriasc on 



O" 



I. — Descriptions of neio Species o/Ctenus. 

 1. Ctcnus fakatus, sp. n. (PI. VII. figs. G, 7.) 



Type S ) ffyiietype ? , in Brit. Mus. 

 Ilab. St. Lucia, W. Indies. 



J . Tot. len. 23 mm., carap. 11 x 8'5 ; legs i. 48, ii. 4G, 

 iii. 41, iv. 55; pat. + lib. i. 1()'5, iii. 12*75, iv. 16. 



? . Tot. len. 26, carap. 13-5 x 10; legs i. 48*5, ii. 40, iii. 40, 

 iv. 51 ; pat. + tib. i. 16*75, iii. 13, iv. 16. 



(J . — Colour. Carapace and legs entirely red-brown, clothed 

 witii yellow-grey pubescence, the three terminal joints fringed 

 below with tine silky yellow hairs, the tarsi, and to some 

 extent the protarsi as well, furnished with a slight scopula. 

 The carapace bears a fine line of grey pubescence down the 

 centre. Abdomen clothed with ferruginous hairs, having a 

 basal, dorsal, central, narrow, pale bar, followed on each side 

 towards the spines by a row of four black spots. 



(^ . — Structure. Carapace strongly raised behind. Eyes: 

 second row straight by anterior margins ; anterior centrals 

 smaller and closer to.ether than posterior centrals, the former 

 less than one, tlie latter one diameter apart ; posterior laterals 

 smaller than posterior centrals ; clypeus less than the diameter 

 of anterior central eye. 



Tibial spur of palpus broad at base, compressed, its apex 

 elongate, aculiform, directed abruptly forwards and slightly 

 outwards. Bulb very similar in structure to that of serra- 

 tipes, si7iuatipcs, &c. A description of the differences is of 

 no use, figures alone being of any value for comparison. 



Posterior protarsi very slightly (scarcely noticeably) 

 sinuous, set with three groups of stout spines along two 

 thirds of their basal length, with a few at the apex. 



$ . — Colour. Much darker than the male, clothed with 

 dark chocolate-brown and yellow pubescence, rendering the 

 central pale line on the carapace very distinct. 



Central pale bar on abdomen more cons{)icuous, but the 

 black spots are less so, their place being taken by spots of 

 golden-brown pubescence, the whole abdomen being clothed 

 with deep golden and brown pubescence. Ventral area pale 

 brown. Anterior protarsi and tarsi of all four pairs clothed 

 with a thick scopula beneath. 



$ . — Structure. Carapace horizontal above in profile. 

 Eyes as in male, but rather further apart, as is usual in the 

 females of this group. 



Vulva very simple, consisting of a broad, convex, chitinous 

 plate only (see PI. VII.). 



