214 
Psyche 
[September 
wide in front in ratio of about 9 : 8. Clypeus with a broad, heavily 
chitinized border; height equal to a little more than twice the di- 
ameter of AME. Palp: essential features shown in Figures 8-10 ; 
tarsal features quite different from others seen in the genus. Abdo- 
men : general features as usual in the genus ; ventral scutum es- 
sentially as represented for the female paratype but the area around 
the scutum is chitinized so that the whole basal region appears to be 
surrounded by this structure. Color in alcohol : carapace, cheli- 
cerae, lip and sternum a bright reddish brown ; abdomen with dorsum 
finely dotted yellow and purplish with a clear yellowish central region 
and with lateral sides and venter yellowish except the scutum which 
is nearly like the sternum. 
Female paratype. Total length 7.54 mm; base of chelicerae only 
slightly anterior to border of clypeus. Pedicel quite well exposed by 
separation of cephalothorax and abdomen. Carapace 3.05 mm long; 
2.01 mm wide opposite second coxae where it is widest; 1.24 mm 
tall; otherwise essentially typical of the genus and as in male. Eyes 
essentially as in male. Chelicerae : general features as usual in the 
genus; with an unusual soft, membranous lobe at base of fang on 
ventral side; retromargin of fang groove with four small teeth and 
promargin with a group of several long, slender teeth or spines and 
long hairs. Maxillae essentially typical of females of the genus. 
Lip: very rugulose; a little longer than wide at base; distal end 
bifurcated and deeply groved. Sternum essentially as in male and 
typical of the genus. Legs: 4123 in order of length; tibial index of 
first leg 16, of fourth leg 11; first patella longest of the four and 
longer than first tibia; first metatarsus shortest of the four and only 
slightly more than one third as long as fourth. Very few trichobothria 
and no true spines observed. Abdomen : essentially as in male except 
for region of scutum and extra-scutal region; appearance of ventral 
scutum and epigynal region shown in Figure 1 1 ; the scutum extends 
dorsally a short distance above the pedicel but there is no extended 
chitinized region beyond the scutum as in male; a low protuberance 
lies just posterior to the ventral scutum. Color in alcohol: only 
slightly different from that of the male; light area through middle 
of abdominal dorsum almost absent. 
Type locality. Male holotype and female paratype selected for 
description were taken in Caroni Swamp, Trinidad, W. I., April 14, 
1964. Nine females and immature specimens were taken in Caroni 
Swamp and in the vicinity of the Wm. Beebe Tropical Research Sta- 
tion at Simla, Arima Valley, Trinidad, W. I. during April, 1964. 
