676 PROCEEDINGS OF THE ACADEMY OF [DeC. 



NOTES ON SOME COSTA RICAN ARACHNIDA 

 BY NATHAN BANKS. 



In the Proceedings of the Academy of Natural Sciences of 

 Philadelphia for 1909, pp. 194-234, I published a list of Arachnida 

 from Costa Rica kindly sent me for determination by Prof. Tristan 

 and Dr. Biolley. Since then Prof. Tristan has sent a further con- 

 signment of these animals, and Prof. Calvert has sent me the Arach- 

 nids collected during his trip in that country (May, 1909, to May, 1910) . 

 The following notes are based on these collections. The types from 

 the material sent by Prof. Calvert are in the Academy of Natural 

 Sciences of Philadelphia, the others are in the author's collection. 



DRASSID^. 



ZIMIROMUS n. gen. 



A Drassid; eyes as figured; both rows strongly procurved; A.. 

 M. E. larger than the other eyes; lip nearly square, maxillae long 

 and impressed, a black ridge on the outer tip, inner tip with brush 

 of black hairs; a short dorsal groove; spinnerets similar to Zimiris; 

 legs slender, with spines, trochanter about one-half the length of the 

 coxa; claws distinctly toothed. 



Differs from the other Prodidomoid Drassids in the strongly 

 procurved eye-rows and large A. M. E. 

 Zimiromus fragilis n. sp. PL XXVIII, fig. 9. 



Cephalothorax, mandibles, and sternum pale yellowish; legs 

 very pale, femora darker; abdomen gray, nearly ])lack above, un- 

 marked, w^ith stiff black hairs at base. Legs slender, with only a 

 few spines on anterior pairs, more numerous on the hind legs, the 

 latter much longer than the abdomen. Vulva large; a long cavity 

 containing a pale transversely ridged tongue. 



Length 5 mm. 



From Turrialba, Costa Rica (Tristan). 

 Teminius conjuncta n. sp. Pl. XXVIII, fig. 2. 



Cephalothorax, mandibles, and sternum dark reddish-brown; 

 legs more yellowish, blacker on femora above and more red-brown 

 on the tarsi and metatarsi I and II; abdomen dark gray, with black 



