148 
Psyche 
[September 
Records. Morelos. Miacatlan, 4 Oct. 1942 O (C. Bolivar). 
Oaxaca. Tehauantepec, 15 Dec. 1947 o, 6-10 Feb. 1948 o (T. Mac- 
Dougall) ; Cerro del Armadillo, 7 Jan. 1948 $ (T. MacDougall). 
Costa Rica. Puntarenas, 1909 9 ? (P. Biolley). 
Sosippus michoacanus sp. n. 
Figures 7, 31, 32. Map 1. 
Type. Female holotype from Tzararacua Falls, 11 km from Urua- 
pan, Michoacan, Mexico, 14 Jun. 1948 (A. M., L. I. Davis) in 
the American Museum of Natural History. The species named after 
the type locality. 
Structure. For comparison of certain diagnostic measurements of S. 
michoacanus to other species see Table 1. 
Posterior cheliceral margin with three teeth on each side. Of five 
females examined, all had this arrangement. 
Tibial spination was the same as in S. calif ornicus with the excep- 
tion that four specimens had 1-2-2 ventral spines on tibia II. 
Clypeus height subequal to the diameter of the AME. Labium 
longer than wide. 
Color. Pattern illustrated in Figure 7. Carapace reddish brown, 
overlaid with black pubescence giving it a darker appearance. Eye 
region dark brown, almost black, with eyes encircled with black. Thin 
median stripe beginning some distance behind the third eye row, con- 
tinuing to posterior edge of carapace. This stripe not conspicuous, with 
white hairs sparsely covering it, densest along the thoracic groove. 
Broad submarginal stripes extending from clypeus to posterior edge of 
carapace, clothed with white pubescence. Chelicerae very dark reddish 
brown, almost black, with intermitent, long black hairs. Conspicuous 
boss on each side, light brown. 
Sternum light brown with gray overtones. Endites and labium 
reddish brown, yellowish at distal ends. Femora brown with dusky 
Explanation of Plate 9 
Fig. 5. Sosippus plutonus sp. n., $ holotype from Tenango del Valle, 
Mexico, Mexico, 25-26 Aug. 1946. 
Fig. 6. S. mexicanus Simon, $ from Acapulco de Juarez, Guerrero, Mex- 
ico, 1 Sep. 1940. 
Fig. 7. S. michoacanus sp. n., 9- holotype from Tzararacua Falls, 11 km 
from Uruapan, Michoacan, Mexico, 14 Jun. 1948. 
Fig. 8. S. cahf ornicus Simon, $ from Brown’s Canyon, Baboquivari Mtns., 
Pima Co., Arizona, 9 Jun. 1952 (pattern and color same as specimens from 
Sabino Canyon, Santa Catalina Mtns., Pima Co., Arizona, 26 Jun. 1960). 
Fig. 9. S. agalenoides Banks, $ syntype from Puntarenas, Costa Rica, 1909. 
