368 
Psyche 
[December 
by slightly less than their diameter. PME separated from one an- 
other by nearly 1.5 times their diameter and from PLE by nearly 
2.5 times their diameter. Laterals separated by nearly seven-twelfths 
of the diameter of ALE. Height of clypeus nearly equal to 1.33 
times the diameter of AME. Chelicerae: much extended; dorsally 
gibbous as usual near base; fang typical of the genus; promargin 
of the fang groove with four teeth and retromargin also with four 
teeth, first small. Maxillae: convergent but not meeting; essentially 
typical of the genus. Lip : slightly wider near middle than long ; 
slightly more than half as long as maxillae. Sternum: typical of the 
genus in general; moderately convex; longer than wide in ratio 
of nearly 23 : 19; surface finely granulate; anterior border nearly 
straight. Legs: 4123 in order of length; all legs with occasional 
spines but none are conspicuous. Abdomen: quite typical of females 
of the genus; without observed special modifications; with no dorsal 
scutum. Epigynum: moderately distinctive (Fig. 7). Color in alco- 
hol : carapace and chelicerae as usual in the genus, a rich, dark, 
reddish brown with few variations ; sternum a light yellowish brown ; 
legs and other mouth parts yellowish brown with variations; abdo- 
men a purplish brown dorsally and dorsolaterally ; venter yellowish; 
spinnerets light yellowish; irregular, small, whitish spots at posterior 
end of dorsum. 
Diagnosis. This species seems to be closely related to Corinna 
bulbosa F. P. -Cambridge and Corinna robusta Chickering. The 
characters of the epigynum are sufficient to establish it as a new 
species. Efforts to match this specimen with one of the unmatched 
males have been unsuccessful. 
Records. No paratypes have appeared in the collection and the 
male is unknown. 
Corinna casueta sp. nov. 
Figures 8-10 
Holotype. The male holotype is from Barro Colorado Island, 
Panama Canal Zone, July 4, 1954. The name of the species is an 
arbitrary combination of letters. 
Figures 8-10. Corinna casueta sp. nov. Fig. 8. Left palpal tarsus; ven- 
tral view. Fig. 9. Left palpal patella and tibia; retrolateral view. Fig. 10. 
Distal end of left palpal femur; nearly prolateral view. Figures 11-16. 
Corinna grassima sp. nov. Fig. 11. Anterior border of sternum of holotype. 
Fig. 12. Distal end of left palpal tarsus; ventral view. Figs. 13-14. Left 
palpal tibia; nearly ventral and retrolateral views, respectively. Figs. 15-16. 
Epigyna of described female paratype and second female, respectively. 
Figure 17. Corinna crassipalpis Chickering; epigynum from below. 
