3 16 THE AMERICAN NATURALIST. [VoL XXXIX. 
16. Maxilla twice as 2 as broad; mandibles long and slender ; abdomen 
convex above . ; i : j Meta. 
Maxillz not twice as ido as Hac à EN, s? 
17. Abdomen elliptical, rather depressed, ion hate at Else Zilla. 
Abdomen subcylindric, with two ip humps at base . . Hentzia. 
18. No spines above on tibize I and I À . 1- Mk 
With some spines, at least one, vis on tibiæ I and II i piod. 
19. Abdomen with spines or humps; Mte broad and tumid in 
front i . Wagneriana. 
Abdomen without spines or hips etazygia. 
20. Legs very slender, especially leg I, ilio desinis of spines; 
cephalothorax very slender ; posterior eye-row strongly recurved 
Acacesia. 
Legs less slender and with a number of distinct "rM or else the pos- 
terior eye-row not strongly recurved : . 21. 
21. Abdomen pointed at base, elongate, sternum one and: one half longer 
than broad; P. M. E. scarcely diameter apart ; . Larinia. 
Abdon not pointed in middle at base . 22. 
22. Abdomen as high behind middle as at base, and elliptical in 1 outing or 
broader behind middle ; P. M. E. about diameter apart; epigynum with- 
out finger; small species, with short legs Singa. 
Abdomen highest toward base, and usually "MESS near bos geo 
23. Cephalothorax with a broad transverse furrow (at least in female); 
abdomen usually prolonged above behind; A. S. E. never twice as far 
from A. M. E. as latter from each other ; quadrangle of M. E. plainly 
wider below than above ; legs more hairy . Cyclosa. 
Cephalothorax without such furrow; abdomen binds prolonged above 
behind ; legs more spiny i ; : i .  Epeira. 


e 

t 

Fig. 18.27 homisidz; face, cephalothorax, Fic. 19. — Cephalo- 
and spinnerets. thorax of Pisaurina. 
THOMISIDE. 
I. Legs III and IV not or scarcely shorter than legs I and II; tarsi I and 
II scopulate M least in er hairs of ind usually branched, prone 
nor erect . (Philodromine) 2. 
