284 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



are small; the tarsus shorter than the tibia. The S is similar to the S , 8mm. 

 long. The abdomen is paler and the median stripe is margined with black, 

 and there are no dots on the venter; the epigynum is very small. 



One pair from Tepic, Nov. 



279. Dendryphantes nubilus Hentz. — Many specimens 

 from Tepic. 



280. Dendryphantes retarius Hentz. — Several specimens 

 from Tepic and Sierra San Lazaro, Sept. 



281. Dendryphantes vitis Cock. — A few specimens from 

 San Jose del Cabo. 



282. Dendryphantes, sp. ? — One female from Tepic. 

 Abdomen pale above, but with iridescent scales, blackish 

 on the sides; cephalothorax, sternum, and legs red-brown; 

 hind pairs paler. 



283. Pachomius niger, sp. no v. 



Plate XVII, Fig. 15. 



Length $ 6 mm.; ceph. 2.7 mm. long, broad 1.8 mm. Cephalothorax 

 dark red-brown, black on eye-region; mandibles and sternum dark red-brown ; 

 legs paler red-brown, tarsi yellowish; abdomen black; epigynum reddish. 

 Cephalothorax long and flat; abdomen slender, broadest in middle, tapering 

 both ways; legs short, first pair much the stoutest, metatarsus IV with two 

 spines below near middle. 



One example from San Jose del Cabo. 



284. Marptusa californica Peck. — One specimen from 

 San Jose del Cabo. 



285. Marptusa familiaris Hentz. — A few specimens 

 from Minititlan. 



