-SELENOPS. 117 
Females. 
A. As in the male sex. 
i, Vulva with a strong, black, horseshoe-shaped central area, with two 
transverse, widely separate, oval cavities along the posterior margin. mewicanus. 
- li. Vulva without central horseshoe-shaped area. 
a. Posterior margin of the vulva deeply emarginate, with a central 
rectangular chitinous piece, a little broader than long . . . . marginalis. 
6. Posterior margin of the vulva not emarginate, with two widely 
separate oval concavities (sec. Keys.) . . . 2. . . « « « . = nigromaculatus. 
B. Asinthe male sex . . 2. 1 ee eee ee ee ee eee minutus. 
Nore.—The vulva in Selenops varies very much in detail. Many specimens, obviously the young of 
S. mexicanus, appear at first sight to belong to entirely different species. 
1. Selenops nigromaculatus. (Tab. VIII. figg. 14, 14a, ¢.) 
Selenops nigromaculatus, Keys. Spinn. Amer., Laterigrade, p. 230, t. 6. figg. 126, 126 a’. 
Type in coll. E. Simon, Paris. Total length, ¢ 8°5, 2 13-9 millim. 
Hab. Mexico}. 
Thanks to M. Simon, I have been able to examine the type, ¢, of this species. The 
legs are not annulated with black, but probably are so in the female and immature 
examples. S. mexicanus, however, has the legs very darkly annulate in some examples. 
2. Selenops marginalis, sp.n. (Tab. VIII. figg. 15,15 a, ¢; 16, 2.) 
Type ¢, cotype 2, in coll. Godman & Salvin. Total length, g 9, 9 10°5 millim. 
3 @. Carapace dull orange-brown, margined with a black line. Abdomen ochreous-brown, marbled with 
darker brown, with a distinct diamond-shaped black mark towards the spinners above. (The abdomen is too 
shrivelled to be able to describe its pattern and coloration.) Legs pale orange-yellow, faintly annulated 
with dusky black at the middle of the femur, the base of the patella and tibia, the middle of the latter, 
and at the base of the protarsus. 
The four central eyes form a row slightly recurved, the centrals being slightly smaller than the laterals. 
Anterior laterals small, about half the diameter of the central posteriors, situated closer to these eyes 
than to the lateral posteriors, less than a diameter from the former. 
The two central anteriors are rather over half a diameter apart, a quarter of a diameter from the central 
posteriors. Lateral posteriors nearly two diameters from the central posteriors and slightly smaller than 
them. Clypeus equal to one-third the diameter of an anterior central eye. 
¢ palpus: for a description of this and of the vulva of the Q see the Table of the species. 
Hab. Mexico, Omilteme in Guerrero (H. H. Smith). | 
3. Selenops mexicanus. (Tab. VIII. figg. 17, 17a, 6, ¢; 18, 184, 4, 2.) 
Selenops mexicanus, Keys. Spinn. Amer., Laterigrade, p. 223, t. 6. figg. 125, 125 a ‘“. 
Type in coll. E. Simon, Paris, Total length, g 127, 9 16:3 millim. ee 
Hab. Mexico}, Chilpancingo, Atoyac, Tuxtla (H. H. Smith); Guarumata (Sarg); 
Nicaragua, Chontales (Janson); Costa Rica (Rogers), San José (Tristan); Panama, 
David, Chiriqui (Champion). 
