1970] 
Chickering — Oonops 
497 
one-third of their circumference and separated from PLE by a little 
more than one-eighth of their long axis. Height of clypeus equal 
to slightly less than one half the the long axis of ALE. Chelicerae: 
fairly robust; vertical; parallel; with no observed special modifica- 
tion. Maxillae and lip apparently quite typical of females of the 
genus; without observed special modifications. Sternum: moderately 
convex; nearly as wide as long; surface smooth and shining; without 
grooves or definite lobes ; posterior end broadly rounded opposite bases 
of fourth coxae which are separated by nearly their width. Legs: 
4213 in order of length; with conspicuous spines; first leg with spines 
as shown in Figures 16-18 (taken from paratype to avoid injury to 
holotype) ; some irregularities of spination noted among paratypes; 
second leg essentially as in first; third and fourth legs with several 
spines on femora, tibiae and metatarsi but much less conspicuous than 
on first and second legs; palp with several slender, inconspicuous 
spines. Abdomen : ovoid ; widest about one-third from base to 
posterior end; six spinnerets typical of the genus with posterior pair 
the longest; with no evidence of a collulus; epigastric and narrow 
ventral scuta barely discernible; epigynal area obscurely distinctive 
(Fig. 19). Color in alcohol: carapace, sternum, legs and mouth 
parts yellowish with some variation; considerable black pigment in 
ocular area ; abdomen light yellowish in general ; with dorsal and 
lateral regions clearly reticulated into irregular polygons; on each 
side just in front of the anterior spinnerets there is a group of four 
or five minute more deeply colored yellowish bodies believed to 
represent the dark subsurface bodies typically seen in the same 
position. 
Diagnosis. This species is believed to be closely related to Oonops 
pallidulus (Chickering). The conspicuous pedal spines, relative posi- 
tion of the eyes, shape of the carapace and the epigynal area seem to 
establish it as a new species. 
Records. Ten female paratypes are in the collection from the 
following localities in the Panama Canal Zone: Summit, July, 1950; 
Barro Colorado Island, July-August, 1954; Summit Gardens, Au- 
gust, 1954; Canal Zone Forest Preserve, July, 1954 and December 
1957 . 
Oonops amacus sp. nov. 
Figures 20-22 
Holotype. The female holotype is from Simla, Trinidad, W. I., 
April 18, 1964. The name of the species is an arbitrary combination 
of letters. 
