502 ARANEIDEA. 
The two examples in the collection are similar in general characters, both of structure 
and pattern, to MZ. wittfeld@, but the form of the vulva (see Plate) is quite different in 
detail, and is sufficient for purposes of identification. One cannot say for certain 
whether the example figured as a variety really belongs here. 
ACACESIA. 
Acacesia, E. Simon, Hist. Nat. Araign. édit. 2, i. p. 795 (1895). 
Type A. foliata (Hentz)=.A. folifera, Marx. North America. 
¢. Coxa i. with a hook and femur ii. with a groove. Coxa and femur of pedipalp with a coniform spur and 
chitinous ridge respectively. Coxa i. with a large coniform spur basally above. Tibia iil. incrassate, 
without series of spines on the inner side, but with two or more spines towards the base, one or two 
very long central spines, and two or more shorter curved spines towards the apex of the underside of the 
segment. Patella of pedipalp with a single apical spine. Femur i. without spines, ii. with a series of 
five spines in the apical half; iii. and iv. with a few spines beneath. Tarsal sheath of palpus with a 
well-developed basal uncus ; tibia not bilobate. Eye-groups not prominent. Posterior row of eyes very 
strongly recurved ; anterior row straight by the margin of the clypeus. Central quadrangle slightly 
narrower behind; posterior eyes much smaller, two diameters apart; anterior centrals separated by 
three-fourths of a diameter. Coxa and trochanter iv. with a short, stout spine; ii. and iii. devoid of 
spines or spurs. 
Q@. Carapace slightly gibbous on each side of the central groove, but inclining upwards towards the eyes. 
Eye-formula practically the same as in the ¢, but the eyes of the central quadrangle more widely 
separate. Sternum not longer than broad. Lower margin of fang-groove with three teeth. Legs 
armed with very fine spines only ; femora entirely devoid of spines beneath. Vulva with the scapus short 
and broad, fused to the basal portion ; directed backwards. Colulus present. Protarsi with one or two 
very fine spines beneath. 
Simon makes a curious mistake in referring Epeira vegeta, Keyserl., to this genus, 
since it obviously belongs to Eustala, in which the vulva of the female is directed 
forwards, and the male has specialized spines on tibia ii. Keyserling’s species presents 
neither of these characters. 
1. Acacesia foliata. (Tab. XLVIII. figg. 1, lace, ¢; 2, 2a-e, 2.) 
Epeira foliata, Hentz, Journ. Bost. Soc. Nat. Hist. v. p. 475, t. 31. fig. 14 (¢)7* ; Spid. U.S. (ed. 
Burgess), p. 116, t. 13. fig. 14, t. 18. fig. 50 (9); Emerton, Trans. Conn. Acad. Sci. vi. 
p- 318, t. 87. figg. 7, 8, 10 (3), 6,9 (2) °*; McCook, Amer. Spid. iii. p. 154, t. 4. figg. 8, 
8a(s),7(2)*; Banks, Proc. Calif. Acad. Sci. (3) i. p. 255%. . 
Epeira folifera, Marx, Proc. U.S. Nat. Mus. xii. pp. 545, 593°, 
Hab. Norta America1~4°—Muxico, Tepic (fide Banks®), Misantla (F. D. 4), | 
Atoyac, Teapa (H. H. Smith); Guatemaa, Chicoyoito (Sarg); Costa Rica (Rogers) ; 
Panama, Bugaba (Champion). 
Emerton’s identification of this species is most likely correct, and since his are the 
first recognizable figures one must accept it as final. There is no reasonable doubt 
that the examples in our collection are identical with Emerton’s specimens, unless 
there are several closely allied forms. The species, too, figured in McCook’s work is 
