SYNEMA. 151 
I have little doubt myself that S. affinitatum, S. profugum, and S. cultum are merely 
varieties of one and the same species, namely &. affinitatum, O. P.-Cambr. The semi- 
circular anterior margin of the fovea is present with slight modifications in the females 
of all of them. ‘The absence or obsolescence of the spermathecal discs and pair of duct- 
orifices in some examples is due to various conditions of maturity and other causes. 
Whether S. adjunctum may be a good species, I cannot say without a great deal 
more material; in this species and in S. pal/iatum the spermathecal discs are closer 
together, and the anterior margin of the fovea has lengthened and become acutely 
triangular. This, however, may only be an individual variation ; for S. cudtwm offers us 
an example of an intermediate stage. ‘The near approach of the sperm-discs would 
directly follow from the elongation of the vulva. 
S. affinitatum and S. palliatum have nevertheless been regarded as two possible 
species, with the others as varieties of one or the other of these. 
The females, types or gynetypes, of S. politum, S. interruptum, and S. putwm are 
immature, so that no definite conclusion can be arrived at concerning them. I have 
not the least doubt that the males, types, of S. politum and S. affinitatum are 
identical forms. A figure of the eyes of the European type, S. globosum (Fabr.), is 
added for comparison [‘lab. X. fig. 14 ( @ )]. 
1. Synema affinitatum, (Tab. X. figg. 15, 2; 16, var. cultwm, 2; 17, var. 
politum, 3.) 
Synema affinitata, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 82, t. 10. figg. 12, 12 a-d 
(o), 18,18 4,6 (¢)". 
Var. Synema profuga, O. P.-Cambr. loc. cit. p. 84, t. 11. figg. 3, 3a, 6 (?)°. 
Var. Synema culta, O. P.-Cambr. loc. cit. p. 119, t. 15. figg. 15, 15 a-c (¢)*. 
Synema interrupta, O. P.-Cambr. loc. cit. p. 120, t. 15. figg. 9, 9 a-d($), 10, 10a (¢)*. 
Synema polita, O. P.-Cambr. loc. cit. p. 241, t. 33. figg. 14, 14a-e (3), 15, 15a(¢)”. 
Type 3, gynetype 2, of S. affinitatum: total length, ¢ 3:5, 2 7 millim.; type, 2, of S. profugum, total 
length 5:75 millim.; type, 2, of S. culéwm, total length 5°75 millim.; type, d, of S. interruptum, total 
length 4 millim.; type, d, of S. politwm, total length 3 millim.: all in coll. Godman & Salvin. 
Hab. Mexico *, Atoyac in Vera Cruz ®, Teapa in Tabasco 4 (H. H. Smith) ; GUATEMALA, 
Chiacam [ 2 ] and Cahabon [ ¢ ] in Vera Paz (Sarg); Panama, Bugaba (Champion). 
We figure the vulva of the female type of S. affinitatum (fig. 15), also that of the 
var. cultum (fig. 16), and the male palpus of S. politum (fig. 17). 
2. Synema palliatum, (Tab. X. fig. 18, 2.) | 
Synema palliata, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 81, t. 10. figg. 8,8 4,5 (¢)’. 
Var. Synema adjuncta, O.-P. Cambr. loc. cit. p. 84, t. 11. figg. 1, la, b(@)*. 
Types, 2; of S. palliatum, total length 4°5 millim. ; of S. adjunctum, total length 6-25 millim. : both in coll. 
Godman & Salvin. 
Hab. Panama, Bugaba?, Volcan de Chiriqui ? (Champion). 
