Zool.— Vol. I.] BANKS— MEXICAN ARACHNIDA. 229 



69. Thargalia gracilis, sp. nov. 



Plate XIII, Fig. 29. 



Length 6.5 mm.; tibia plus patella IV 3 mm. Cephalothorax, sternum, 

 and femora black, the former clothed with scattered white hairs, rest of an- 

 terior legs and last joints of palpi pale yellowish; posterior legs darker, the 

 tibia? and metatarsi with black lines, coxa; rather reddish; mandibles black, 

 with pale spots at the tips; abdomen black, with red-brown horny shield at 

 base extending over the basal fourth of the dorsum, some white hairs at base, 

 and probably a band across the middle. Anterior eye-row nearly straight; 

 A. M. E. hardly their diameter apart, closer to the A. S. E. ; posterior row 

 procurved; P. M. E. fully their diameter apart, closer to the equal P. S. E.; 

 dorsal groove short; sternum rather broad, oval. Abdomen twice as long as 

 wide, hardly constricted in the middle, a horny piece on venter just before 

 the spinnerets. Tibia plus patella IV scarcely longer than the cephalothorax; 

 a spine above on tip of tibia IV. 



One female; no locality. 



70. Hypsinotus mexicanus, sp. nov. 



Plate XVI, Fig. iS. 



Length 10-12 mm. Cephalothorax dark red-brown, almost black in front and 

 on the mandibles; sternum bright red-brown; legs pale yellow-brown; abdo- 

 men brown, rather paler below. Cephalothorax shining, broad, shorter than 

 tibia plus patella I, high behind the eye-region; dorsal groove and furrows 

 distinct; posterior eye-row procurved, P. M. E. about once and a fourth their 

 diameter apart, and as far from the equal P. S. E. ; anterior row straight; A. 

 M. E. hardly one-half their diameter apart, about as far from the smaller A. 

 S. E., which are about as far from the equal P. S. E.; mandibles large and 

 prominent; sternum scarcely longer than broad. Legs quite long, having 

 three or four pairs of spines under tibia I and II, two pairs under these meta- 

 tarsi, no spines above on posterior tibiae. Epigynum shows a circular de- 

 pression open behind, surrounded by a dark red-brown, horny area. Tibia 

 of & palpus has a large process with two smaller processes at the tip. 



Several specimens; Tepic, Oct. and Nov. 



71. Hypsinotus testaceus, sp. nov. 



Plate XVI, Fig. 17. 



Length 7 mm. Cephalothorax reddish brown, testaceous behind; man- 

 dibles nearly black; sternum bright red-brown; legs pale yellow-brown; abdo- 

 men testaceous. Cephalothorax hardly shining, finely granulate, convex, 

 broad, about as long as tibia plus patella I; dorsal groove and furrows dis- 

 tinct; posterior eye-row procurved; P. M. E. fully once and a third their 

 diameter apart, rather farther from the equal P. S. E. ; A. M. E. much larger, 



