272 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3 d Ser. 



side extending back as a stripe on the upper side, but rather indistinct, the 

 space between and below paler; venter black. Anterior eye-row slightly 

 curved, a trifle shorter than the second row; three pairs of spines of nearly 

 equal size under all tibiae. Abdomen rather long, subcylindrical, pointed at 

 tip, rounded at the base. The $ is similar, but a little smaller, and the black 

 side-stripes on the abdomen more distinct; the palpus pale, except the tarsus, 

 which is dark. 



A pair from Mt. Orizaba, and a male from Vera Cruz 

 (rather paler). 



238. Lycosa sp.? — One female from Minititlan, much 

 like L. mexicana, but the venter pale, possibly only a 

 variety of that species. 



239. Diapontia sp. ? — Many young specimens from Tepic 

 and San Jose del Cabo. It has a dark cephalothorax, with 

 a narrow pale stripe each side, and a narrow black median 

 stripe on dorsum of the abdomen. 



240. Trochosa cinerea Fabr. — Many specimens from San 

 Jose del Cabo, Sierra San Lazaro, Ensenada, Tepic, Mt. 

 Orizaba, and Vera Cruz. 



241. Trochosa parva Bks. — Three specimens from 

 Tepic, and two without locality, probably from Baja Cali- 

 fornia. 



242. Trochosa mexicana, sp. nov. 



Plate XVII, Fig. 4. 



Length $ 9 mm.; ceph. 5 mm. long, broad 3.9 mm.; tibia plus patella IV 

 5.5 mm. Cephalothorax pale yellowish, an irregular brown stripe each side, 

 and the margins dark, eyes on black spots; mandibles rather reddish; 

 sternum and legs pale yellowish, the latter with dark bands on the femora, 

 most distinct on the under side, sometimes also on the tibiae. Abdomen 

 blackish above, with a narrow basal spear-mark of pale, and some spots 

 each side of it; venter pale brownish. Cephalothorax low in front, sides 

 much sloping, first eye-row no longer than the second, dorsal eyes consider- 

 ably farther apart than those of second row. Legs short, except the fourth 

 pair, femora very stout, three pairs of spines under all the tibiae; sternum 



