374 ARANEIDEA. 
%?_ Eyes of posterior row subequal. 
a’, Eyes much more closely grouped. Central 
quadrangle narrower in front; anterior cen- 
trals one diameter apart. Clypeus twice the 
height of the central ocular quadrangle . . Licrr, O. P.-Cambr. 
b". Eyes much more widely separate. Central 
quadrangle broader in front; anterior cen- 
trals two and a half diameters apart. Clypeus 
not higher than the central ocular quadrangle. Hertona, O. P.-Cambr. 
6°. Central anterior eyes mnch larger than the 
laterals 2. 1 1. ge ew ee Acuma, O. P.-Cambr. 
BB. Carapace with a transverse groove in the middle. 
a®. Abdomen shorter, not vermiform. Colulus distinct. 
**", Central posterior eyes closer to each other than 
tothe laterals. . . . .. . .~. +. =. . . ArGyropss, E. Simon. 
**? Central posterior eyes further from each other than 
from the laterals. . . . .. . obs Ruompu#a, L. Koch. 
6°. Abdomen much longer, vermiform. Colulus almost 
obsolete . . . . ew. 6 we ee ehUehUSCT)SC™”~SC A RRIAMNES, Thorell. 
Norz.—(1) The generic affinities of so minute a form as Eyilona munda are very difficult to determine 
from a single specimen, not very well preserved ; (2) from the material before me I am unable to confirm the 
statement in Hist. Nat. Araign. éd. 2, i. p. 502, as to the relative length of the tibia of legi. In the last three 
genera enumerated, Argyrodes, Rhomphea, and Ariamnes, the relative proportions are practically the same. 
TEUTANA. 
Teutana, E. Simon, Arachn. Fr. v. p. 161 (1881). 
Type 2. triangulosa (Walck.). Europe, Africa, and America. 
The spiders referred to this genus are very difficult to separate by any reliable 
characters from those included under Lithyphantes, though, so far as one can judge 
from the material at hand, the contiguity of the lateral eyes may prove constant. The 
sternum is prolonged between the coxe of the fourth pair of legs, and the chitinous 
margin of the stridulating-cavity on the abdomen of the male is toothed as in all the 
other allied genera. A single species only is represented in the collection before me, 
and this one occurs also in Europe. 
1. Teutana grossa. (Tab. XXXV. figg. 9,9a, 6; 10, 10a, 9 .) 
Theridium grossum, C. L. Koch, Die Arachn. iv. p. 112, t. 140. fig. 321( 2)’. 
Teutana grossa, EK. Simon, Arachn. Fr. v. p. 164°; Banks, Proc. Calif. Acad. Sci. (3) i. p. 238°; 
Kulezynski, Aran. Hungar. ii. p. 36, t. 1. fig. 41 (3) *. 
Teutana zonata, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 806, t. 35. figg. 7, 7a,b(3), 
8, 8a—c (2) (nec Keyserl.) ’*. 
Theridium nitidum, Holmberg, An. Agric. Republ. Argent. no. 22, p. 13 (fide Keyserling) *. 
