CHIRACANTHIUM. 85 
‘Subfam. CLUBIONINA.. 
In this subfamily the terminal segment of the posterior pair of spinners is sometimes 
nearly as long as the basal segment, thus differing from that of the Corinninz and 
Micariine, in which it is always short. 
The genera represented in the Central-American fauna may be distinguished thus:— 
GENERA. 
A. Carapace without any central thoracic stria. 
1. Apical segment of posterior spinners very short, but distinct. 
Lower margin of fang-groove with two teeth situated a long 
distance from the base of the fang . . . . . . . . Curracanruium, K. Koch. 
2. Apical segment of posterior spinners very long, slender, flexuose. 
Lower margin of fang-groove with 3, 4, or 5 teeth situated 
near the base of the fang . . . . . . . . . . . . Evuricuurus, E. Simon. 
B. Carapace with central thoracic stria distinctly marked. 
1. Central anterior eyes much larger than the laterals. Terminal 
segment of posterior spinners nearly as long as the basal 
segment. . . .. . . . . . . . Srrorarcaus, E. Simon. 
2. Central anterior eyes not or slightly larger than the laterals. 
Terminal segment of posterior spinners very short. 
a. Posterior row of eyes procurved. Central posteriors more 
remote from each other than from the laterals . . . . Cxusrona, Latr. 
6. Posterior row of eyes recurved. Central posteriors nearer to 
each other than to the laterals. . . . . . . . . ~ Lavricius, E. Simon. 
CHIRACANTHIUM. 
Chiracanthium, K. Koch, Die Aracbniden, vi. p. 9 (1839). 
Type C. punctorium (Villers) = nutriv, Walck. (sec. Simon). Kurope. 
Carapace without any central thoracic stria. Central anterior eyes not or scarcely larger than the laterals, 
subequal. Posterior pair of spinners with a short conical terminal segment. Lower margin of the fang- 
groove with two teeth situated some distance from the base of the fang; upper margin with two small 
teeth. Colulus absent. . 
Figures of the structural details of the European C. nutrix are given on Tab. VI. 
figg. 12, 12 a-c (2). 
Males * 
a. Tibial spur of the palpus single, lying beneath the produced tarsal basal 
spur, on the outside... . . ce eee ferum, O. P.-Cambr. 
b. Tibial spur of the palpus divided into two ‘branches, with the tarsal basal 
spur lying between them. (Sec. Becker’s figures 14, 14a.) . . . keyserlingi, Becker. 
* The figure of C.znclusa (Hentz) is not sufficiently detailed to enable one to grasp the differential characters, 
that of C. keyserlingi, Beck., is, however, sufficient for the purpose. 
