1972] 
Brady — Sosippus 
41 
posited in the Museum of Comparative Zoology. The name is a 
noun in apposition after the Roman god. 
Discussion. Sosippus janus is difficult to interpret at this time, 
primarily due to a lack of specimens from areas other than Lake 
Lochloosa. The geographic range of this species is unknown, but 
it appears to be limited to mesic habitats. Of the 36 specimens ex- 
amined from the type locality some show deviation from the nor- 
mal 4-4 pattern of posterior cheliceral teeth (Table 1). However, 
this variation and the variation in epigynal structure (Figs. 14-18) 
is no greater than one encounters in other large series of specimens 
from a single locality, for example S. mimus near Mandeville, 
Louisiana. It is possible that S. janus represents a geographic race 
or, perhaps, a hybrid zone between S. floridanus and S. mimus , but 
the present evidence indicates a distinct biological entity. 
The female genitalia of S. janus are distinctive and the color pat- 
tern is unlike S. floridanus, which has the same number of posterior 
cheliceral teeth. In addition to structural differences, S. janus is 
found in mesic situations, like the Live Oak (Quercus virginiana) 
woodland of Figure 43, while S. floridanus is found in drier com- 
munities, such as the Pine and Palmetto association shown in Fig- 
ure 42. Because of these distinctions the population at Lake Loch- 
loosa is recognized as representative of a new species here. 
Measurernents. Total body length of five males from the type 
locality 9.9-12.7 mm, mean 11.70 mm, carapace width 4. 2-5.0 mm, 
mean 4.74 mm, carapace length 5. 7-6.5 mm, mean 6.22 mm. 
Width of anterior eye row 1.28-1.45 mm, mean 1.3 70 mm. Pos- 
terior ocular quadrangle (POQ)*: PME width 1.05- 1.20 mm, 
mean 1.125 mm, PLE width 1.50- 1.73 mm, mean 1.645 mm, POQ 
length .95-1.08 mm, mean 1.020 mm. 
Leg IV: femur 5. 8-6.9 mm, mean 6.40 mm, patella-tibia 7.1- 
8.2 mm, mean 7.70 mm, metatarsus 7.0-8.0 mm, mean 7.58 mm, 
tarsus 3. 4-3. 6 mm, mean 3.50 mm, total length 22.3-26.7 mm, 
mean 25.18 mm. 
Patella-tibiae: I 6.5-7. 7 mm, mean 7.18 mm, II 6. 2-7. 2 mm, 
mean 6.72 mm, III 5. 5-6. 3 mm, mean 5.98 mm. 
Total body length of 20 females from the type locality 12.4-15.8 
mm, mean 14.41 mm, carapace width 4.5-5. 8 mm, mean 5.19 mm, 
carapace length 6. 1-7.7 mm, mean 7.01 mm. 
*The posterior median eyes (PME) and the posterior lateral eyes (PLE), 
which form two rows in the Lycosidae, are referred to in this paper as 
the posterior ocular quadrangle (POQ). Measurements of the POQ are 
diagrammed in Text Figure 1 of Brady 1962. 
