206 
Psyche 
[September 
of the male palp, the eyes, shape of the carapace all seem to estab- 
lish it as a valid species of the genus Oonops. 
Records. Numerous specimens of this species are now before me 
from the following localities: So. Bimini, Bahama Islands, May, 
1 95 1 (W. J. Gertsch, M. A. Cazier, C. and P. Vaurie) ; April, 
1952 (E. Mayr) ; St. John, U. S. V. I., July, 1966 and March, 
1970 (H., L. and F. Levi); St. Croix, U. S. V. I., Sept., 1966; 
St. Thomas, U. S. V. I., July-August, 1966; Virgin Gorda., British 
Virgin Islands, August, 1966. It seems very likely that this species 
will also be identified from other islands in the West Indies to be 
considered in Part 3 of this series of papers on Oonops. 
Oonops castellus sp. nov. 
Figures 12-20 
Idolotype. The male holotype is from St. Thomas, U. S. Virgin 
Islands, February 16, 1964. The name of the species is an arbitrary 
combination of letters. 
Description. Total length 1.65 mm. Carapace 0.79 mm long; 
0.62 mm wide opposite second coxae where it is widest; 0.39 mm 
tall ; rises behind PME to opposite posterior border of second coxae 
and then descends steeply to posterior border (Fig. 12) ; with a 
sparse covering of light colored hair ; with no definite median thoracic 
groove or pit; surface smooth and shining. Eyes: six as usual in a 
fairly compact group; posterior row strongly recurved and occupies 
nearly five-sixths of width of carapace at that level (Fig. 13). 
Eyes nearly equal in size but with PME slightly the smallest. ALE 
separated from one another by nearly seven-eighths of their diameter; 
subcontiguous to PME and PLE. PME contiguous to one another 
for nearly one-fourth of their circumference; separated from PLE 
by nearly one-fourth of their diameter. Height of clypeus hardly 
discernible but probably about one-half the radius of ALE. Cheli- 
cerae, maxillae and lip apparently quite typical of males of the 
genus and without special modifications (observed on dissected para- 
type). Sternum: quite convex; scutiform as usual; slightly widest 
between second coxae but nearly as wide between first coxae; only 
slightly longer than wide; not extended between fourth coxae which 
are separated by about their width; surface smooth and shining; 
without grooves or lobes; with a sparse supply of stiff bristles. Legs: 
4213 in order of length; first tibiae and metatarsi have paired ventral 
spines; second legs appear to have only irregularly placed spines; 
third and fourth legs with fairly well defined spines. Palp : all 
segments except the tarsus without special features (Figs. 14-17). 
