308 
Psyche 
[December 
bama. This egg sac was spherical, white, about 4 mm in diameter, 
and thin enough to clearly see the eggs inside. Nothing is known 
concerning nursery construction or any other reproductive behavior. 
Distribution. Southern coastal plain and lower piedmont of east- 
ern North America from North Carolina southward to southern 
Florida and Cuba and eastward to Louisiana. A single immature 
specimen from Tecolutla, Veracruz, Mexico was found in the Amer- 
ican Museum of Natural History collection. (Map 3). 
Material examined. Eight males, 31 females, 207 immatures. 
Pisaurina dubia (Hentz), new combination 
Figues 11, 12, 16, 23, 24; Map 4 
T ho mis us ? dubius Hentz, 1847, Jour. Boston Natur. Hist. Soc., 5: 448^ 
pi. 23, fig. 11, sex unknown. Holotype destroyed. 
Thomisus ? tenuis Hentz, 1847, Jour. Boston Natur. Hist. Soc., 5: 449, pi. 
23, fig. 12, sex unknown. Holotype destroyed. NEW SYNONYMY. 
Maypacius floridanus Simon, 1898, Ann. Soc. Ent. Belgique, 42: 14. An 
immature female from Florida deposited in the Museum National 
d’Histoire Naturelle in Paris, examined. NEW SYNONYMY. 
Thanatidius dubius, -Bishop, 1924, Bull. New York State Mus., 252: 17, 18,. 
pi. 33, fig. 2, $. Bishop, 1936, Entomol. News, 67: 242-243, $. Roe- 
wer, 1954, Katalog der Araneae, 2(a) : 125. Bonnet, 1959, Bibliographia 
Araneorum, 2: 4396. 
Thanatidius tenuis, -Bishop, 1924, Bull. New York State Mus., 252: 18-20, 
pi. 2, fig. 1-5, 9. Roewer, 1954, Katalog der Araneae, 2(a): 126. 
Bonnet, 1959, Bibliographia Araneorum, 2: 4396. 
Thanatidius floridanus, -Roewer, 1954, Katalog der Araneae, 2(a): 126. 
Diagnosis. This species differs from the other members of the 
genus by having a strongly recurved anterior eye row, by the width 
of the ALE which, when divided by the width of the PME, equals 
more than 1.5, and by a triangular group of white hairs between the 
PME which are directed forward. The male palpus is the most dis- 
tinctive in the genus. 
Description. Carapace : depressed; wider than abdomen; tri- 
angular group of white hairs directed forward from area between 
PME. Eyes: ALE near margin of clypeus and prominantly tuber- 
culate. Legs: (2-1) -4-3. Abdomen: long, cylindrical, and tapering 
posteriorly from middle of its length. Pattern: variable; ranges 
from pair of longitudinal bands on carapace which converge with 
V-shaped abdominal band (Fig. 12) to more diffuse pattern of lines 
and irregular maculae (Fig. 11). male. Cymbium moderately broad; 
conductor expanded distally with a spine retrolaterally ; median 
apophysis singular, narrowed distally; tibial apophysis often with a 
spine on margin. (Fig. 16) female. Genitalia as in Figs. 23, 24. 
immatures. Body form, pattern similar to adults. 
