110 ARANEIDEA. 
2. Vulva without chitinous side-pieces, dentiform processes very 
small, 
aa. Vulva very broad, produced on each side into a rounded 
lobe. Size much larger: length 23mm... . . . . dilobatus, sp. n. 
66. Vulva narrower, not nearly so much produced laterally. 
Size much smaller: length 18mm... . . . . . « wcolans. 
6*, Ocular quadrangle not narrower in front (if anything, slightly wider) ; 
anterior central eyes equal to the posterior central . . . . . « peregrinus, sp. n. 
B. Ocular quadrangle very much narrower in front, broader than long. 
Anterior central eyes less than half the diameter of the posterior central. 
a. See figure of vulva... ee i ee ) CC MANee, BP. BD, 
}. See figure of vulva. qe et te i i ee ee aw, ORBIT, 
c. See figmreofwulva . . 0.0. 6 we ek oe en Oye, Ti, Sim, 
1. Ctenus supinus, sp.n. (Tab. VII. fig. 33, ¢.) 
Type, 2, incoll. Godman & Salvin. 
©. Total length 17 millim. Carap.8x6. Legs: i. 26; ii. 24; ili, 22; iv. 29°5. Pat.+tib. 1. 8°5; ii. 8; 
ili, 65; iv. 9. Prot.i.5; ii. 4:5; ii. 4:5; iv. 8. 
. Carapace, mandibles, and legs deep mahogany-brown, clothed with grey pubescence. Legs freckled with 
spots of grey pubescence. Abdomen deep olive-brown or black, unicolorous above and below. (It is 
very likely that in some specimens there is a central pale dorsal band.) 
Carapace almost level above, in profile. Second row of eyes procurved, as in C. incolans. Ocular quadrangle 
slightly longer than broad, narrower in front; anterior eyes smaller, both pairs over half a diameter apart. 
Clypeus equal to one diameter of an anterior central eye. 
Hab. Costa Rica (Rogers). 
2. Ctenus peregrinus, sp. n. (Tab. VII. figg. 34, 34a, 2.) 
Type, 2, in coll. Godman & Salvin. 
2. Total length 25 millim. Carap.11x810. Legs: 1.45; ii. 43; ii. 38; iv. 50. Pat. + tib.i.16; 
ii, 14°75; iii. 12°25; iv. 15. Prot.i.10; 11.9; ii. 9; iv. 14. | 
Q@. Carapace and legs dark mahogany-brown, clothed with very fine pubesceuce and dark grey short hairs. 
Legs beneath and sternum paler brown. Abdomen deep dusky black, with a central dorsal, longitudinal, 
deeply dentated band extending from the base to the spinners, consisting of seven more or less triangular 
orange-yellow blotches. Underside paler, unicolorous. 
Carapace straight above, in profile. Second row of eyes procurved, anterior margins of centrals aligned with 
posterior margins of laterals. Ocular quadrangle slightly longer than broad, uot narrower in front 
(if anything, slightly wider); eyes subequal. Clypeus equal to almost one and a half diameters of an 
anterior central eye. 
Hab. GUATEMALA (Sarg). 
3. Ctenus bilobatus, sp.n. (Tab. VIII. fig. 8, 8a, 2.) 
Type, 2, in Brit. Mus. 
Q. Total length 23 millim. Carap.10°5x.8. Legs: i. 39°5; ii. 87; iii, 833; iv. 42:5. Pat.+tib. i. 13°75 ; 
ii, 12°5; ii. 10; iv. 12°5. Prot. i. 8; ii. 7-53 iii. 7; iv. 11. ; 
Q. Carapace and legs mahogany-brown, clothed with grey pubescence. Carapace bearing a broad central band 
of yellow-grey pubescence and another marginal band of the same hue. Abdomen brown, with a broad 
