1980] 
Levi — Male of Echinotheridon 
179 
diameters apart, almost touching laterals. Posterior median eyes 
their diameter apart, their diameter from laterals. The height of the 
clypeus is slightly more than 2 diameters of anterior median eyes. 
The chelicerae are small and weak. Their length equals the height of 
the clypeus. The sternum is convex; the coxae are not modified. 
Total length, 1.22 mm. Carapace, 0.59 mm long, 0.57 mm wide. 
First femur, 0.81 mm; patella and tibia, 0.80 mm; metatarsus, 0.65 
mm; tarsus, 0.45 mm. Second patella and tibia, 0.62 mm; third, 0.41 
mm; fourth, 0.61 mm. 
Record. Brazil. Mato Grosso: Sinop [12° 31' S: 55° 37' W], 
October 1975, S (M. Alvarenga, AMNH). 
Literature Cited 
Branch, J. H. 
1942. A spider which amputates one of its palpi. Bull. South. California Acad. 
Sci., 41: 139-140. 
Levi, H. W. 
1955. The spider genera Chrysso and Tidarren in America (Araneae: Theri- 
diidae). J. New York Ent. Soc., 58: 59-81. 
1963. American spiders of the genus Achaearanea and the new genus Echino- 
theridion (Araneae, Theridiidae). Bull. Mus. Comp. Zool., 129(3): 
187-240. 
