CORYSSOCNEMIS. 371 
CORYSSOCNEMIS. 
Coryssocnemis, E. Simon, Hist. Nat. Araign. éd. 2, 1. p. 483 ( 1893). 
Type C. callaica, EK. Simon. South America. 
Eyes eight, anterior row straight. Mandibles not striate in either sex. 
The species known to me may be distinguished as follows :— 
Females. 
a, Anterior process of the vulva simple, conical. . . . . «© . «© + « Simoni, O. P.-Cambr. 
6. Anterior process of the vulva distinctly furculate . . . . . . - . furcula, sp. n. 
1. Coryssocnemis simoni. (Tab. XXXV. figg. 7, 7a, b, 2.) 
Coryssocnemis simoni, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 237, t. 31. figg. 9, 
9a-f (?)*. 
Type, 2, in coll, Godman & Salvin. Total length 7 millim. 
Hab. Mexico, Omilteme in Guerrero 8000 feet (ZZ. H. Smith '). 
2. Coryssocnemis furcula, sp.n. (Tab. XXXV. figg. 8, 8a, 4, 2.) 
Type, 2, in coll. Godman & Salvin. Total length 6 millim. 
Hab. Guatemaa, Tecpam in the Los Altos region 7000 feet (Stod/). 
Very similar to C. simoni, but instantly recognizable by the furculate anterior vulval 
process. 
The following species is unknown to me :— 
Pholcus cordatus, Bilimek, Verh. zool.-bot. Ges. Wien, xvii. p. 907 (1867) !.—Haé. 
Mexico, cave of Cacahuamilpa }. 
Fam, THERIDIIDA. 
The spiders belonging to this family may readily be distinguished from those of the 
Argyopide, which more nearly resemble them in general habit and appearance 
(Linyphia, &c.), by the possession of a distinct comb on the tarsi of the fourth pair of 
legs. This organ, which is used for flinging silk, often in a quite liquid state, over the 
entangled prey, was long ago noticed by Lucas and O. Pickard-Cambridge, and has 
been fully described by myself in the ‘Journal of Microscopy and Natural Science’ for 
1890. It has since been recognized by E. Simon as a distinctive family character 
(Hist. Nat. Araign. éd. 2, i. p. 491). 
In their habits the Theridiide do not very greatly differ, except that a certain 
number of them (e. g. Episinus) make no web at all, or spin a very few cross-lines 
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