1971] 
Chickering — Genus Oonops 
21 1 
wise essentially as in male. Eyes: ratio of eyes ALE : PME : 
PLE = 7 : 6 : 6; otherwise essentially as in male. Chelicerae, 
maxillae and lip without special modifications and typical of the 
genus. Sternum: slightly lobed opposite coxae; each slight lobe bears 
a cluster of stiff bristles; longer than wide in ratio of nearly 6:5; 
fourth coxae separated by nearly their width; otherwise essentially 
as in male. Legs: 4123 in order of length as in male; only an 
occasional spine on first and second legs but third and fourth legs 
bear several fairly robust spines on tibiae and metatarsi; tricho- 
bothria. also observed on tibiae and metatarsi. Abdomen : ovoid ; scuta 
much clearer than in male; epigastric scutum with a pronounced 
swelling (Fig. 24) ; epigynal area essentially as shown in Figure 25. 
Color in alcohol: in general, essentially as in male; scutal regions 
more clearly outlined because of stronger chitinization ; pigment in 
ocular region black and reddish mixed; abdomen with a fairly clear 
reticulation in addition to the basically whitish or very pale yellow- 
ish coloration. 
Diagnosis. This appears to be another species more or less closely 
related to Oonops anoxus from the Panama Canal Zone. The features 
of the male palp and the distinctive epigynal area of the female quite 
definitely establish it as a new species. 
Records. The described female paratype was, apparently, col- 
lected with the male holotype. Numerous paratypes of both sexes 
are in the collection from the region in which the holotype was taken 
and all were collected by Dr. W. J. Gertsch, M. A. Cazier and C. 
and P. Vaurie. 
Oonops gertschi sp. nov. 
Figures 26-30 
Holotype. The male holotype is from So. Bimini, Bahama Islands, 
May, 1951 ; collected by Dr. W. J. Gertsch and M. A. Cazier. The 
species is named after Dr. W. J. Gertsch, formerly Curator of 
Arachnida, American Museum of Natural History, New York City 
and will be deposited in that institution. 
Description. Total length 1.47 mm. Carapace nearly 0.7 mm 
long; 0.52 mm wide opposite interval between second and third coxae 
where it is widest; nearly 0.27 mm tall; gently raised just behind 
PME and then nearly level to beginning of moderately steep pos- 
terior declivity opposite interval between third and fourth coxae 
(the holotype is very fragile with boundaries of parts often indistinct). 
Eyes : six as usual in a moderately compact group ; posterior row only 
a little wider than anterior row and occupies a little more than seven- 
tenths of width of carapace at that level (Fig. 26) ; outlines some- 
