1970] 
Chick ering — Oonops 
501 
tions; palps medium brown; abdomen very light yellowish, nearly 
white with several irregular, small, darker spots just anterior to 
the spinnerets on the venter. 
Diagnosis. It is difficult to relate this species closely to any known 
species but its eyes, shape of the carapace and pedal spines seem 
to place it fairly close to Oonops donaldi Chickering. I believe that 
the features of the palp definitely establish it as a new species. 
Records. Two male paratypes were taken in the same locality and 
on the same day as the holotype. The female is unknown. 
Oonops trapellus sp. nov. 
Figures 27-29 
Holotype. The male holotype is from Simla, Trinidad, W. I. April 
19, 1964. The name of the species is an arbitrary combination of 
letters. 
Description. Total length nearly 1.75 mm (body somewhat 
curled). Carapace 0.79 mm long; 0.59 mm wide opposite interval 
between second and third coxae where it is widest; 0.32 mm tall 
opposite third coxae where it is tallest; rises from PME to highest 
point and then descends steeply to posterior border with a slight 
concavity about the middle of the declivity; in profile it appears 
much like that of Oonops itascus sp. nov.; surface smooth with a 
sparse covering of dark hairs. Eyes : six as usual ; posterior row 
rather strongly recurved and occupies nearly entire width of cara- 
pace at that level (Fig. 27). Ratio of eyes ALE : PME : PLE = 
nearly 9: 8.5 : 8. ALE separated from one another by nearly their 
diameter; separated from PME by a fairly broad line and are sub- 
contiguous to PLE. PME contiguous to one another for fully one 
fourth of their circumference and separated from PLE by a fairly 
broad line. Height of clypeus obscure but probably somewhat less 
than the radius of ALE ; pigment in ocular area with a reddish tint. 
Chelicerae : apparently typical of the genus ; without special modifica- 
tions. Maxillae: parallel; distal end probably divided but details 
undetermined because of fragility of holotype and scarcity of para- 
types for dissection. Lip: apparently as usual in the genus, without 
special modifications. Sternum: scutiform; convex; not noticeably 
lobed or grooved ; only slightly longer than wide between second 
coxae where it is widest but nearly as wide between first coxae; 
appears to be firmly united to lip; bluntly terminated just before 
bases of fourth coxae which are separated by considerably more than 
their width. Legs: 4213 in order of length; spines quite conspicuous 
