200 PROCEEDINGS OF THE ACADEMY OF [April. 



Volcan Poas, April, Costa Rica. The markings of abdomen are 

 very characteristic. 



Strotarchus minor n. sp. 



Cephalothorax and legs yellow-brown, head darker; mandibles red- 

 brown ; abdomen above and below gray-brown ; sternum yellow-brown ; 

 maxillae and lip black, tip of palpus black. Legs long and slender, 

 with few weak spines beneath, 2-2 under tibiae I and II; vulva with 

 large transverse concavity in front, behind is a chitinous ridge, and 

 behind that is a curved dark line each side. Length 8 mm. 



From Turrialba, Costa Rica (Tristan). 



Aysha minuta Cambridge. 



Biol. C. Am. Arachn. Aran., II, 99, 1900. 



San Jose. 



Aysha simplex Cambridge. 



Biol. C. Am. Arachn. Aran., I, 227, 1S97. 



Anyphaena delicatula n. sp. 



Cephalothorax yellowish, irregularly marked with blackish each 

 side; eyes on black spots; abdomen pale, with many large grayish 

 spots above nearly covering the dorsum; legs pale, slightly marked 

 with black; sternum and venter pale. P. M. E. over one diameter 

 apart, fully as far from the equal P. S. E. ; A. M. E. plainly smaller than 

 A. S. E. Tibiae and metatarsi I and II with 2-2 spines beneath; 

 abdomen rather short and broad, the ventral furrow at about middle 

 of venter. Length 5 mm. 



One female from Tablago, Costa Rica (Tristan). 



Anyphaena plana Cambridge. 



Biol. C. Am. Arachn. Aran., II, 97, 1900. 



La Palma; and Poas Volcan. 



Anyphaena simplex Cambridge. 



Biol. C. Am. Arachn. Aran., I, 124, 1894. 



San Jose. 



Tendis elegans n. sp. 



Cephalothorax brown, a median pale stripe from back of pars cepha- 

 lica to tip, and a lateral pale stripe, much broken up in front; man- 

 dibles red-brown; legs yellowish, densely marked with small black 

 spots, almost forming a band near the base of tibia, extreme bases 

 of tibiae (especially III and IV) are very pale. Abdomen brown, 

 with four triangular median black spots from the middle to tip, the 



