1972] 
Chickering — Corinna 
375 
unusual concavity at each anterolateral corner (Fig. 19) ; posterior 
end sharply pointed and just opposite bases of fourth coxae which 
are separated by nearly one-third of their width. Legs: 4123 in 
order of length; all legs with spines; typical in general of the genus. 
Palp: essential features shown in Figures 20-22; tarsal canaliculus 
simply folded, not intricately convoluted. Abdomen: all parts essen- 
tially typical of males of the genus. Color in alcohol: carapace a 
rich reddish brown with darker streaks radiating from region of 
median thoracic groove; with a moderate amount of black pigment 
in ocular area; chelicerae nearly like carapace; sternum a medium 
yellowish brown ; legs light yellowish brown with some variation ; 
abdomen generally yellowish, lighter ventrally; just dorsal to spin- 
nerets there is a purplish area which continues dorsolaterally with 
diminishing clarity to base. 
Diagnosis. This species seems to be most closely related to Corinna 
mucronata F. P.-Cambridge. The palpal features together with the 
unusual sternal concavities definitely establish it as a new species. 
Records. There are no male paratypes and the female is unknown. 
Corinna mucronata F. P.-Cambridge 
Figures 23-25 
Corinna mucronata F. P.-Cambridge, 1899: 69, figs. 7-8. The male holo- 
type from Bugaba, Panama is in the British Museum (Natural History). 
Petrunkevitch, 1911: 467; 1925: 75; Banks, 1929: 50; Chickering, 1937: 
25. 
Banks (1929) reported the species from Barro Colorado Island 
and Fort Sherman, Panama Canal Zone. At present the collection 
in the Museum of Comparative Zoology includes numerous speci- 
mens of both sexes from Barro Colorado Island, July-August, 1934, 
1936 and 1939 together with specimens taken in May, 1964. I 
also have collected the species in Boquete, El Valle and Porto Bello 
all in Panama. 
There is considerable variation in size among the specimens now 
available for study. The sternum is quite convex and nearly as wide 
as long. The male palp has a complicated tibia and tarsus. There 
is considerable variation in the appearance of the female epigynum 
(Figs. 24-25). 
Corinna nervosa F. P.-Cambridge 
Corinna nervosa F.P.-Cambridge, 1899: 70, fig. 9. The male holotype 
from Guatemala or Bugaba, Panama is in the British Museum (Natural 
History). Petrunkevitch, 1911: 467; 1925: 76; Roewer, 1954: 598 ; 
Bonnet, 1956: 1214. 
This is another species which has not been found in my collections 
