1963] 
Levi — Spider Genera 
171 
Note. Since this specimen was presumably collected by Simon, the 
type locality can be narrowed to the limited northern areas of Vene- 
zuela, Caracas, and the states Aragua and Carabobo, through which 
Simon travelled. 
Description. Carapace, sternum light brown; legs yellow-white; 
abdomen whitish; male darker than female and more heavily sclero- 
tized. Carapace and sternum fused between coxae and around pedicel ; 
both with a reticulate raised pattern and raised rings around pedicel. 
Female pedicel stalk slightly shorter than that of male (Fig. 6). 
Anterior median eyes two-thirds the diameter of posterior median 
eyes, their radius apart, almost touching laterals. Posterior median 
eyes of female one-third diameter apart, their radius from laterals. 
Posterior median eyes of male one-quarter diameter apart, one diameter 
from laterals. Chelicerae apparently with one large tooth on anterior 
margin. Abdomen higher than long with few long setae ( Figure 1 ) . 
Male abdomen with sclerotized ring around pedicel and sclerotized 
ring around spinnerets. Total length of female 1.5 mm. Carapace 0.80 
mm long, 0.53 mm wide. First femur, 0.87 mm; patella and tibia, 
O.92 mm; metatarsus, 0.57 mm; tarsus, 0.46 mm. Second patella and 
tibia, 0.66 mm; third, 0.50 mm; fourth, 0.71 mm. Total length of 
male 1.7 mm. Carapace 0.93 mm long, 0.55 mm wide. First femur, 
1.06 mm; patella and tibia, 1.05 mm; metatarsus, 0.62 mm; tarsus, 
0.46 mm. Second patella and tibia, 0.78 mm; third, 0.55 mm; fourth, 
0.82 mm. 
The genitalia are small, transparent (Fig. 3-5), and difficult to 
study in the few specimens available. 
The descriptions and illustrations were made from British Guiana 
specimens. 
Natural History. Specimens have been collected by sifting litter. 
This species is probably an ant mimic. 
Record. British Guiana. Kartabo, 1924, 1 $, 1 <S (AMNH). 
ILetschkia Keyserling 
Hetschkia Keyserling, 1886, Die Spinnen Amerikas, Theridiidae, 2(2): 246. 
Type species by monotypy: H. gracilis Keyserling. 
Carapace sclerotized, suboval with a posterior stalk in both sexes 
(Figs. 11, 12). Carapace of male wider than that of female. Abdo- 
men suboval, without colulus. 
The carapace shape distinguishes the genus from T'heridion, the 
short embolus and female connecting ducts from Helvibis. 
