206 PROCEEDINGS OF THE ACADEMY OF [April, 



slits is a larger white spot. Vulva as figured for N. convexa and 

 emarginata; a pair of cavities separated by a median septum, which 

 behind shows a short tongue. Abdomen of female rather broad, 

 pointed behind, much like a Euro-pis. Length 3 mm. 



From Cartago, Costa Rica, 1st July (Picado). A male that may 

 belong to the species is from Orosi, 2d July. 



Neriene gamma Cambridge. 



Biol. C. Am. Arachn. Aran., II, 419, 1902. 



San Jose. 



Neriene bisignata n. sp. 



Cephalothorax and mandibles yellowish-brown ; legs paler, posterior 

 sides of cephalothorax rather darker, eyes on black spots, sternum, 

 venter and palpal organ black; dorsum of abdomen mostly white, a 

 median black stripe and some lateral and apical marks as figured. 

 Legs very slender, especially the tarsi; palpus with a slender, curved, 

 basal hook, an apical pointed process and a more slender style, pointing 

 toward the process. A female has the abdomen marked the same, 

 but the cephalothorax is dark brown. Length 3 mm. 



From Aguas Caliente, January (Tristan), and San Jose, in Bromelia 

 (Picado), Costa Rica. 



Neriene postica ». sp. 



Cephalothorax pale yellowish in the middle, dark on sides ; sternum 

 black; abdomen greenish gray, with some cretaceous white spots, and 

 dark marks as figured, the tip conical and jet black; venter black, a 

 white spot each side at base of the spinnerets; legs greenish yellow. 

 Cephalothorax narrow, head high; posterior middle eyes very large, 

 situate on tubercles, one and one-half diameter apart, about one 

 diameter from the laterals. Length 2.5 mm. 



From Orosi, 5th June, Costa Rica (Picado). 



Frontinella communis Hentz. 



Journ. Bost. Soc. Nat, Hist,, VI, 28, 1S47. 



La Palma. 



MIMETID^J. 

 Mimetus rapax Cambridge. 



Biol. C. Am. Arachn. Aran., I, 296, 1899. 

 Turrialba; and Escazii. 



EPEIRIDiE. 

 Tetragnatha alba Cambridge. 



Biol. C. Am. Arachn. Aran., II, 432, 1902. 



San Jose (B. and T.); La Bolca (Picado); and Aguas Calientes 

 (Picado). 



