1948] 
Bryant — Spiders f rom Mexico 
59 
terior row procurved, p.m.e. larger than a.m.e., separated 
by less than a diameter,, p.l.e. separated from p.m.e. by 
a diameter of p.m.e., lateral eyes touching, p.l.e. slightly 
larger than a. l.e. ; quadrangle higher than wide, same 
width in front as behind; clypeus vertical, and higher 
than quadrangle; mandibles vertical, pale, cone-shaped; 
labium pale; maxillee twice as long as labium; abdomen 
globose, with a narrow median dark stripe with wavering 
margins outlined with a narrow pale stripe each side, 
in the emarginations a dark spot, three pairs in all, sides 
a dull tan, entire abdomen with scattered colorless hairs, 
venter pale ; legs, 1-2-4-3, and I and II right legs missing, 
I pair much the longest, pale, femora and tibiae slightly 
darker at the tips, rows of colorless hairs ; epigynum, a 
pair of small dark circular sacs, fully two diameters 
above the fold, separated by a diameter and a half, with 
small oval openings beneath as figured. 
Holotype 2 Mexico; Acapulco, 19 December 1944 (S. 
Jones). 
Undoubtedly Theridion placidum has been confused 
with Theridion spiralis Emerton. The latter is a com- 
mon species in the northern part of the United States 
and lias been reported by Keyserling from Venezuela 
and by Banks from Teapic, Mexico. Unfortunately a 
specimen of the Banks identification is not in the mu- 
seum collection. A type specimen of Theridion spira- 
lis Emerton from Essex, Massachusetts, which is now 
before me, has the median stripe on the abdomen pale, 
heavily outlined by a dark stripe ; the epigynum is sepa- 
rated from the fold by less than a diameter and the 
lower margin of the area is chitinized and rolled out- 
ward. 
Family Akgiopid^ 
Genus Aranea Linnaeus 1756 
Aranea pallidula (Keys.) 
Epeira pallidula Keyserling, 1863, p. 124, pi. 4, figs. 
14, 15. “2 St. Fe de Bogota (N. Granada).” 
Araueus pallidulus F.O.P. -Cambridge, 1904, 2, p. 514, 
pi. 49, fig. 13. 
