1972] 
Chickering — Corinna 
377 
from Panama. Apparently it has not been reported since the original 
descriptions were published. 
Corinna robusta Chickering 
Figure 26 
Corinna robusta Chickering, 1937: 25, figs. 20, 53, 75-76. The male holo- 
type from Barro Colorado Island, Panama Canal Zone is in the Museum 
of Comparative Zoology. Roewer, 1954: 599; Bonnet, 1956: 1216. 
In addition to the holotype and described female paratype the 
collection now includes one male from Barro Colorado Island, July- 
August, 1936 and two females from the same locality, June-July, 
1934 and July-August, 1936 together with a female from El Valle, 
Panama, July, 1936 and a female from Porto Bello, Panama, Au- 
gust, 1936. The species has not been found in my collections from 
Panama since 1936. As usual in this genus, the epigynum varies 
considerably in appearance among the few specimens available for 
study (Fig. 26). 
Corinna silvatica Chickering 
Figures 27-28 
Corinna silvatica Chickering, 1937: 27, figs. 9, 26, 82-83. The male holo- 
type from Barro Colorado Island, Panama Canal Zone is in the Museum 
of Comparative Zoology, Roewer, 1954: 600; Bonnet, 1956: 1216. 
The collection in the Museum of Comparative Zoology now in- 
cludes one male, June, 1950 and nine females collected June-July, 
1934; June 25, 1936; July- August, 1939. All are from Barro Colo- 
rado Island, Panama Canal Zone. There is considerable variation 
among the females regarding the appearance of the epigynum and 
some uncertainty exists regarding the correct identification. Figures 
27-28 are offered here to show variations in appearance of this organ. 
Bibliography 
Banks, N. 
1929. Spiders from Panama. Bull. Mus. Comp. Zool., 69: 53-96. 
Bonnet, Pierre 
1956. Bibliographia Araneorum. Toulouse. 2(2). 
Chamberlin, R. V. 
1925. Diagnoses of New American Arachnida. Bull. Mus. Comp. Zool., 
67(4) : 211-248. 
Chickering, Arthur M. 
1937. The Clubionidae of Barro Colorado Island, Panama. Trans. 
Amer. Micros. Soc., 56, No. 1. 
Figures 23-25. Corinna mucronata F. P.-Cambridge. Fig. 23. Left max- 
illa of male from below. Figs. 24-25. Epigyna of females from below 
showing variation in appearance. Figure 26. Corinna robusta Chickering; 
epigynum of female from below. Figures 27-28. Corinna silvatica Chicker- 
ing; epigyna of females showing variations in appearance. 
