306 THE AMERICAN NATURALIST. (VoL. XXXIX. 
No spines above on tibie III and IV . ; . Drassus. 
11. P. M. E. large, oval, contiguous or nearly so ; no spine übe on base 
of tibia III and IV; usually with but one or two spines below tibia I 
Zelotes. 
P. M. E. smaller, nearly round, and plainly separate ; a spine above on 
base of tibiae III and IV ; usually four to six spines below tibia I 
Herpyllus. 
P. M. E. smaller, oval, well separated; no spines above on base of 
tibie III and IV; ten spines below on tibia I : i Drassinella. 

Fic, 8.— Clubionidz ; Aa cephalothorax, mouth- 
parts, and spinner 
CLUBIONIDE. 
1. On the venter there is a transverse furrow, remote from spindi rep- 
resenting the openings of the posterior spiracles 10 
No such furrow remote from spinnerets 2. 
2. Two rows of nr spines under tibiz I iod. II, more dan two in | each 
row. 11. 
Not more iun 2-2 spines vider tibiae I PN II, or be impulit situ- 
ate, and banded legs 
3. Maxillz impressed wich an oblique fand; as in the Biossidas no dorsal 
groove . . Micaria. 
Maxillz without canon, convex ; deni groove ata present . 4. 
4. Leg I plainly longer than IV ; body and legs pale; spines on legs 
Chiracanthium. 
Leg I not longer than IV ; . : 
5. No spines on legs, or only a few dudo ‘tibia. t : : = & 
Spines fairly numerous on legs à 3 . - à ; 
6. Posterior eye-row strongly recurved  . i à ; Trachelas. 
Hte eyerow straight . eriola. 
7. A. M. E. several times their diner kom bined aid often a 
Sale spot near base of abdomen ; legs usually partly dark Castaniera. 
A. M. E. scarcely diameter from es margin, no horny spot on 
abdomen, legs never dark i 
8. Lip longer than wide ; inne Map: : ee not mottled. 
Clubiona. 
