28 
Psyche 
[March-June 
TABLE 1 
SPECIES 
LOCALITY 
CHELICERAL 
TEETH 
EPIGYNUM 
MIMUS 
FOUNTAINBLE AU 
3-3 (II) 
3- 4 (3) 
4- 2 ( 1) 
IS 
FLORIDANUS 
CEDAR KEY 
4- 4 (33) 
5- 4 ( 1) 
IS 
JANUS 
LAKE LOCHLOOSA 
4-4 (21) 
4-3 (4) 
4- 5 ( 1) 
5- 3 ( 1) 
a 
PL ACI DUS 
LAKE PLACI D 
3- 3 ( 8) 
4- 3 (2) 
8 
COMPARISON OF SELECTED 
POPULATIONS 
published the third volume in a series of monographs dealing with 
the classification of the Lycosidae of the world. Roewer (1959) 
separated Sosippus into two genera: Sosippus, in a restricted sense, 
and Sosippinus, a new genus. This separation was based on the 
number of posterior cheliceral teeth. Employing this criterion Sosip- 
pus mimus and S. floridanus were placed in separate genera. As 
shown in my earlier paper (Brady, 1962) this division into two 
genera on the basis of number of posterior cheliceral teeth was clearly 
an artificial device. In most genera of the Family Lycosidae the 
number of posterior cheliceral teeth is relatively constant, 3-3 (three 
on each side) being the most common pattern. In the genus Sosip- 
pus, however, specimens from a single population may have 4-3, 4-4, 
4-5 , or 5-3 posterior cheliceral teeth (see Table 1). This simply 
illustrates that a single character difference cannot be indiscrimi- 
nately applied, particularly in separating genera. From my initial 
investigation in 1962, it became clear that Sosippus was represented 
by one species, S. calif ornicus, in the southwestern United States,, 
but the picture was less clear in the southeastern United States. 
