1909.] NATURAL SCIENCES OF PHILADELPHIA. 201 



basal one is divided; venter pale; sternum dark, with pale median area. 

 Posterior eye-row procurved, eyes equal; P. M. E. less than diameter 

 apart, fully diameter from the laterals ; A. M. E. very small ; legs slender, 

 tibiae I and II with 2-2 spines beneath, no apical pair visible; 

 metatarsi I and II with one pair of spines beneath ; ventral furrow at 

 middle of the venter. Length 5 mm. 

 From Tablago, Costa Rica (Tristan). 



Teudis gentilis Cambridge. 



Biol. C. Am. Arachn. Aran., I, 199, 1896. 



San Jose. 



Teudis bicolor n. sp. 



Cephalothorax pale yellowish, legs and palpi pale, mandibles pale 

 as also the sternum; abdomen olive-brown, above and below without 

 markings. Eyes rather close together, posteriors equidistant; A. M. E. 

 close together, and as near to larger A. S. E. The metatarsi I and II 

 scopulate, and with one pair of long basal spines, and two laterals; 

 all spines very long; legs long and slender; abdomen rather elongate. 

 Length 10 mm. 



From Aguas Caliente, Costa Rica (Picado). 



Sillus putus Cambridge. 



Biol. C. Am. Arachn. Aran., I, 200, 1896. 



Tablazo. 



Sillus longispina Cambridge. 



Biol. C. Am. Arachn. Aran., II, 104, 1900. 



From El Higuito, near San Mateo (Pac), 200 m., January (B. and 



T.). 



Eutichurus frontalis n. sp. 



Cephalothorax pale yellow; mandibles black, paler on base; legs 

 pale yellowish, tips of tarsi black; maxillae black; sternum yellow; 

 abdomen yellowish gray above and below. Cephalothorax rather 

 broad and high in front, no dorsal groove; eye-rows broad; A. M. E. 

 slightly larger than the S. E., posterior eyes subequal, the P. M. E. 

 as far apart as from the P. S. E. ; legs slender; mandibles high, not 

 porrect; one spine under tibia I, a pair under base of metatarsus I; 

 last joint of upper spinnerets long, but not as long as in E. fcrox; 

 vulva shows a large elliptical cavity. Length 8 mm. 



From Aguas Caliente, January, Costa Rica (Picado). 



HERSILIIDJE. 

 Tama mexicana Cambridge. 



Biol. C. Am. Arachn. Aran., I, 107, 1893. 

 La Verbena; Surubres (B.); and San Jose, on the branches of trees. 



