1970] 
Chick ering — Oonops 
507 
Description. Total length 1.19 mm, exclusive of the extended 
spinnerets; including the spinnerets total length is 1.32 mm. Cara- 
pace O.55 mm long; 0.45 mm wide opposite second coxae where it is 
widest; 0.26 mm tall; only slightly arched and only moderately 
raised from PME to beginning of steep posterior declivity opposite 
interval between second and third coxae ; surface smooth with a 
moderate number of dark, stiff bristles. Eyes: six as usual and in 
a moderately compact group ; posterior row moderately recurved and 
occupies practically the entire width of the carapace at that level 
(Fig. 40). Ratio of eyes ALE : PME : PLE = nearly 7 : 6.5 : 6. 
ALE separated from one another by nearly one-half their long axis; 
separated from PME only by nearly one-tenth of their long 
axis and nearly contiguous to PLE at one point. PME contiguous 
to one another for about one-fourth of their circumference and sepa- 
rated from PLE by a line. Apparently the clypeus is practically 
eliminated because the ALE are placed so low and because the margin 
of the carapace turns dorsally between these eyes. Chelicerae and lip 
appear to be typical of the genus and without special modifications. 
Maxillae: these appear to be divided distally to form tooth-like 
terminations; fragility of the holotype and lack of paratypes prevents 
more detailed observation. Sternum : strongly elevated ; nearly as 
wide as long; surface smooth and shining; with numerous bristles 
the most conspicuous of which are clustered opposite the coxae and 
at the bluntly rounded posterior end between the bases of the fourth 
coxae which are separated by about their width. Legs: 41=23 in 
order of length; no spines have been observed on first and second 
legs ; the third and fourth legs bear a few spines ; trichobothria. have 
been observed on tibiae and metatarsi. Palp : all segments except 
the tarsus appear to be quite typical of males of the genus and with- 
out special modifications; the tarsus appears to be quite unusual 
among species studied in the preparation of this paper (Figs. 41-42). 
Abdomen: ovoid; 0.61 mm long, exclusive of the extended spin- 
nerets; O.37 mm wide; no scuta visible; spinnerets essentially typical 
of the genus. Color in alcohol : abdomen nearly white ; all other 
parts light yellowish except the black pigment in the ocular area. 
Diagnosis. It is difficult to relate this species directly to other 
species within the genus but it seems to belong with Oonops anoxus 
sp. nov. together with three other species as indicated in the appro- 
priate descriptions. The features of the palp definitely establish it 
as a new species. 
Records. There are no male paratypes and the female is unknown. 
