Zool.— Vol. I.] BANKS— MEXICAN ARACHNIDA. 281 



hardly paler on sides, the black hair is very dense under tibia I ; metatarsi IV 

 rather long, a spine before middle. In S (10.5 mm. long) the mandibles are 

 large, porrect, divergent, and polished, the fang is undulate and has a bifid 

 tooth near middle; two large teeth on base of mandibles, and a blunt process 

 above and below near base of fang. The anterior legs are longer than in the 

 ? and more densely black haired. 



One pair from Tepic, Oct. Known by black hair, dark 

 color, and spots on sides of abdomen. 



271. Phidippus fraternus, sp. nov. 



Plate XVII, Fig. 24. 



Length 9 11-12 mm.; ceph. 5 mm. long, broad 4 mm. Cephalothorax 

 red-brown, sides clothed with white hair, blackish on eye-region, with some 

 iridescent scales; clypeus and palpi long, white haired; mandibles reddish, 

 polished; sternum red-brown; legs reddish, tarsi pale, anterior pair darkest, 

 most of joints darker at tips, all with long white hair, except black at tip of 

 tibia I; abdomen clothed above with bright bronze or coppery scales, sur- 

 rounded by a white band (in some specimens reddish) and three pairs of white 

 dots above; venter with three dark lines; hind metatarsi with one spine in 

 front before tip, none below. The 1 is 8.5 mm. long; the cephalothorax, 

 mandibles, and legs dark red-brown or almost blackish; abdomen dark red- 

 dish, with iridescent scales above and a narrow white stripe around sides 

 (sometimes broken toward spinnerets into spots) and three pairs of white 

 dots above. Mandibles long, scarcely porrect, a tooth below at base; fang 

 short, evenly curved. 



Various specimens from El Taste, Sierra San Nicolas, 

 Sierra San Lazaro, and a large male from Magdalena Island. 



272. Phidippus disjunctus, sp. nov. 

 Plate XVII, Fig. 21. 



Length ? 13.5 mm.; ceph. 5.8 mm. long, broad 4.6 mm. Cephalothorax 

 red-brown, blackish in eye-region, with iridescent scales, white scales on the 

 sides; clypeus and pale palpi fringed with long white hair; mandibles red- 

 dish. Legs pale red-brown, blackish at ends of tibia;, tarsi and metatarsi all 

 pale, clothed with white hair and black bristles, black hair under tibia I ; ster- 

 num dark red-brown; abdomen brown, a dark median stripe on venter, above 

 with a white band around base, behind its ends is a large oval spot, and be- 

 hind this an elongate spot with projections upward, four pairs of small dots 

 in the middle field, all spots more or less distinctly margined with black, the 



