86 
Psyche 
[June 
Chrosiothes jamaicensis sp. n. 
Figures 27-30 
Type. Female holotype from Liguanea, St. Andrew Parish, 
Jamaica, West Indies, October 1957 (A. M. Chickering) in the 
Museum of Comparative Zoology. The species is named after the 
island of the type locality. 
Description. Carapace brown with irregular dusky marks in eye 
region, and on sides and middle; eyes on reddish areas. Sternum 
brown, gray on sides. Legs yellowish to brown with indications of 
dusky marks on venter. Abdomen with two humps (Fig. 30), dor- 
sum black, white and mottled gray; venter black. Male is lighter 
yellowish with a wide median dorsal longitudinal band on carapace. 
Eyes subequal in size, laterals on slight tubercles. Anterior median 
eyes one diameter apart, almost touching laterals. Posterior eyes one 
diameter apart in female, one-third diameter in male, their radius 
from laterals in male. Total length of female 2.9 mm. Carapace 
1.04 mm long, 1.00 mm wide. First femur 1.50 mm; patella and 
tibia 1.62 mm; metatarsus 1.47 mm; tarsus 0.65 mm. Second patella 
and tibia 1.04 mm; third 0.82 mm; fourth 1.50 mm. Total length 
of male 1.6 mm. Carapace 0.65 mm long, 0.57 mm wide. First 
femur 0.93 mm; patella and tibia 1.06 mm; metatarsus 0.88 mm; 
tarsus 0.48 mm. 
Variation. The specimens from Dominica have a longer abdomen 
and higher humps. 
Diagnosis. The female resembles Episinus amoenus Banks, but has 
very different internal genitalia (Fig. 28). The male is very different. 
The species has to be placed in the genus Chrosiothes. The palpus 
(Fig. 27) suggests that it is probably close to C. wagneri but the 
shape of the radix, the embolus supporting structure, differs. 
Natural history. The species has been found under ledges on 
Dominica. 
Records. Jamaica: 15 km W of Red Hills Road, St. Andrew 
Parish, Nov. 1957, 2 ? paratypes, (A. M. Chickering) ; Long Moun- 
tain, 5 Dec. 1955 (C. Underwood) ; Guanaboa Vale, St. Catherine 
Par., Nov.-Dee. 1957, ? paratype, (A. M. Chickering). Dominica: 
Jacks Walk above Roseau, July 1958, 9 cf (S. Lazell, AMNH). 
Chrosiothes niteroi sp. n. 
Figures 31-33 
Type. Female holotype from Niteroi, Est. Rio de Janeiro, Brazil, 
in the Museum National d’Histoire Naturelle, Paris (no. 9143). The 
specific name is a noun in apposition after the type locality. 
