496 
Psyche 
[December 
Oonops pallidulus (Chickering) 
Figures 12-13 
Oonopinus pallidulus Chickering, 1951: 222, figs. 10-11. The female holo- 
type from Barro Colorado Island, Panama Canal Zone is in the Museum 
of Comparative Zoology, Harvard University. 
In 1951 I had only the female holotype. Since that date numerous 
specimens, believed to belong here, have been added to the collection. 
Identification is often difficult, however, because of the obscurity of 
some important features especially of the epigynal area which seems 
to vary in appearance in different specimens. Repeated examinations 
have convinced me that spines are present on the legs (Fig. 13) but 
they are very inconspicuous as compared to those occurring on the 
legs of Oonops persitus sp. nov. for example. It now seems probable 
that I also have this species recorded from Jamaica, W. I. but the 
final decision in this matter must await more careful study of the 
available specimens. The male remains unknown. 
Records. I now have about nineteen females assigned to this 
species. All of these have been collected in the Panama Canal Zone 
on Barro Colorado Island, in Summit Gardens or in the Canal Zone 
Forest Preserve on the following dates: July-August, 1954; January- 
February, 1958 and in May, 1964. 
Oonops persitus sp. nov. 
Figures 14-19 
Holotype. The female holotype is from Barro Colorado Island, 
Panama Canal Zone, July 1-2, 1939. The name of the species is an 
arbitrary combination of letters. 
Description. Total length, exclusive of the somewhat extended 
spinnerets 2.13 mm; including the spinnerets total length is 2.24 mm. 
Carapace nearly 0.77 mm long (somewhat overlapped by abdomen) ; 
nearly 0.66 mm wide opposite interval between second and third 
coxae where it is widest; nearly 0.33 mm tall; considerably raised 
and gently arched from just behind PME to beginning of fairly 
steep posterior declivity (Fig. 14) ; surface smooth and shining; with 
a row of five or six long, slender spinules along median region and 
with few hairs elsewhere. Eyes: six as usual in a moderately com- 
pact group ; seen from above, posterior row recurved and occupies 
nearly the full width of the carapace at that level (Fig. 15). Ratio 
of eyes ALE : PME : PLE = nearly 8.5 : 8 : 8. ALE separated 
from one another by slightly less than their long axis ; separated from 
PME by nearly three-eighths of their long axis and from PLE by 
less than one-eighth of their long axis. PME contiguous for nearly 
