52 Psyche [March- June 
Ceylon species, from St. Vincent, and casually stated that it 
was found in the tropics around the world. It is not improbable, 
that the species found on St. Vincent is either new, or one of 
the species found in Florida. 
I wish to express here, my thanks to Mr. George Nelson for 
collecting at Sebastian; to Dr. William M. Barrows for gen- 
erously allowing me to examine his collections from Fort Myers 
and to Mr. N. Banks for his encouragement and help. 
Genus Coleosoma O.P.-Cambridge 
Proc. Zool. Soc. London, 1882, p. 426. 
Cephalothorax longer than broad, moderately convex, slop- 
ing gradually from eye area to posterior margin, thoracic groove 
punctiform; eyes rather small, anterior row recurved, eyes sub- 
equal and equidistant, posterior row procurved, lateral eyes 
touching; clypeus very high, convex; mandibles vertical, small 
and weak; labium wider than long; maxillae narrow, inclined 
over labium; abdomen in male, long, usually constricted about 
middle, with a thin, bilobed, chitinized plate at anterior end 
that extends onto cephalothorax and continues on venter to 
about the middle of the abdomen; in female, the abdomen may 
be cylindrical, or produced in a tubercle above the spinnerets, 
the chitinized plate found in male, missing; legs in male, first 
pair very long. 
Genotype; Coleosoma blandum Cambridge, male, Ceylon. 
Coleosoma is separated from Lithyphantes by the higher, 
convex clypeus, slender mandibles, and the abdominal plate 
longer both on dorsum and venter. At present the genus con- 
sists of the genotype from Ceylon, and the three species de- 
scribed in this paper. 
Coleosoma flavipes O.P.-Cambridge 
Figures, 1, 4, 7, 9 
Biol. Centr. Amer., 1895, 1:154, pi. 19, fig. 12. “ $ Teapa, 
in Tabasco, Mexico; Guatemala.” 
Male. Length, 2.1 mm., ceph. 0.6 mm., abd. 1.5 mm. long, 
0.4 mm. wide. 
Cephalothorax grayish-brown, more than two-thirds as wide 
as long, (4.0: 5.5), posterior margin about one half that of 
