346 ARANEIDEA, 
13. Oxyopes brunneus, sp. n. (Tab. XXXII. fig. 29, 2.) 
Type, 2, in coll. Godman & Salvin. Total length 7 millim. 
Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith). 
The scales have been almost entirely rubbed off from the single specimen received of 
this species, and with these the colour and pattern have vanished ; but the form of the 
vulva is quite distinct from that of any other Oxyopes in the collection before me. 
The general ground-colour is deep brown, whereas that of all the other members of 
the genus here described is yellow or orange. 
14. Oxyopes flavus. 
Oxyopes flava, Banks, Proc. Calif. Acad. Sci. (3) i. p. 278, t. 17. fig. 28 (2)°. 
Type, 2, in coll. Calif. Acad. Sci. Total length 7:5 millim. 
Hab. Lower Catirornia!.—Mexico, Tepic}. 
15. Oxyopes acutus. 
Oxyopes acutus, Banks, Proc. Calif. Acad. Sci. (3) i. p. 279, t. 17. fig. 27 (¢)*. 
Type, 2, in coll. Calif. Acad. Sci. Total length 7 millim. 
Hab. Lower Catirornia !.—Mexico, Hermosillo 1. 
OXYOPEIDON. 
Oxyopeidon, O. P.-Cambridge, Biol. Centr.-Amer., Arachn. Aran. i. p. 139 (1894). 
Oxyopedon, E. Simon, Hist. Nat. Araign. éd. 2, ii. p. 880 (1898). 
Type O. putum, O. P.-Cambridge. Central America. 
O. putum is here selected as the type, since the species first described (0. facile, 
O. P.-Cambr.) belongs to Hamataliwa, Keys. The genus Oxyopeidon is distinguished 
from Peucetia by its strongly procurved posterior row of eyes, from Oxyopes by the 
greater separation of the posterior central eyes, and from Hamataliwa by the closer 
grouping of the anterior eyes, and the fact that these form a recurving line, the eyes 
being also equidistant from each other. 
The females of the species known to me may be distinguished as follows, O. putum 
and O. flebile being alone represented in the male sex :— 
Females. 
A. Vulval area with a triangular tongue at the posterior margin, or with 
a deep, central, posterior cavity. . 
i. Vulval area with a broad, triangular, pale yellow tongue, its apex 
lying on the posterior margin, its basal angles forming a more or 
less deep fovea on each side . putum, O. P.-Cambr. 
ii. Vulval area with a deep, central, oval, or semicircular cavity towards 
the posterior margin. 
