408 ARANEIDEA. 
and longer than the protarsus. A very minute colulus is present, and also the tarsal 
comb on the fourth pair of legs. 
The two species occurring in the collection before me may be recognized as 
follows :— 
a. Leg iv. longer than the abdomen... .. . + + + gracillimus, O. P.-Cambr. 
b. Leg iv. shorter than the abdomen . . ... . . + ~ « Qapproximatus, O. P.-Cambr. 
1. Ariamnes gracillimus. (Tab. XX XVIII. figg. 20, 20a, 4, 2.) 
Ariamnes gracillima, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 129, t. 17. figg. 9, 
9a-c(?2)'. 
Type, 2, in coll. Godman & Salvin. Total length 22°5 millim. 
Hab. Panama, Los Remedios in Chiriqui (Champion 1). 
The length quoted for this and the next species is taken from the clypeus to the 
apex of the abdomen. 
2. Ariamnes approximatus. 
Ariamnes approzimata, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 180, t. 17. figg. 8, 
8 a-c(¢)}. 
Type, 2, in coll. Godman & Salvin. Total length 24°75 millim. 
Hab. Panama, Bugaba in Chiriqui (Champion). 
Notre.—The type of the following genus, which belongs to the Theridiide, has come 
to hand since the preceding pages have been in type :— 
COLEOSOMA. 
Coleosoma, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. 1. p. 154 (1895). 
Type C. flavipes, O. P.-Cambr. Central America. 
This genus belongs to the group of stridulating Theridiide, and differs from all 
others of the family in having a large bifid plate on the anterior margin of the abdomen 
above the pedicle. 
1. Coleosoma flavipes. 
Coleosuma flavipes, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 154, t. 19. figg. 12, 
12 a-d(3)’. 
Type, ¢, in coll, Godman & Salvin. Total length 2:25 millim. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith*); Guarewana, Coban (Sarg '). 
