Zool.— Vol. I.] BANKS— MEXICAN ARACHNIDA. 287 



294. Habrocestum divaricatum, sp. nov. 



Plate XVII, Fig. 7. 



Length $ 5 mm.; ceph. 2.5 mm. long, broad 1.8 mm. The cephalothorax 

 is pale; eye-region and clypeus black, a white spot under each lateral eye, a 

 median black triangle from posterior margin, and each posterior side narrowly 

 black; mandibles black; palpi black, some white hair on the patella;; legs 

 pale, anterior femora infuscated, posterior pairs banded, dark lines on the tibia;; 

 sternum pale; abdomen pale, two dark stripes above, connected near spin- 

 nerets, not reaching front margin; venter black on basal part and on sides, 

 pale behind, with a median black T mark. Third pair of legs much the 

 longest; patella prolonged above in a reddish point. What I take to be the 

 $ is paler than the f , the cephalothorax, however, marked the same. Legs 

 all pale; abdomen light brownish, with oblique pale stripes each side and a 

 median one in posterior part; venter with three dark lines; it is 6 mm. long. 



Several specimens from Sierra San Lazaro, Sept. 



295. Habrocestum aztecanum, sp. nov. 



Plate XVII, Fig. 9. 



Length i 5 mm. Cephalothorax pale; eye-region dark, crossed by fine 

 white band in front, dorsal eyes on black spots, below them a white spot; 

 eyes of second row surrounded by white, a long median triangular black spot 

 behind, and an oblong spot each side; clypeus white haired; legs pale, striped 

 with black except tarsi; the mandibles white, with a long black spot each 

 side at base; sternum and coxae wholly pale; abdomen with two large dark 

 spots at base, and behind a large triangular black spot enclosing a small white 

 triangle, sides black; venter with a black median stripe. Usual structure of 

 the genus; patella of leg III enlarged and prolonged above; one spine above on 

 tibia III, two above on metatarsus III. A 9 , possibly of this species, is 6 mm. 

 long, and looks much like H. cristatum Hentz. It has dark cephalothorax, 

 with white hair on sides, and indistinct marks on the brown abdomen. 



A few specimens from Tepic, Nov. 



296. Habrocestum dorsalis, sp. nov. 



Plate XVII, Fig. 12. 



Length & 5 mm.; ceph. 2.5 mm. long, broad 1.7 mm. Cephalothorax dark 

 brown, scarcely darker in the eye-region, clothed with white scales and long 

 black bristles, clypeus dark; mandibles red-brown; palpi, sternum, and legs 

 dirty yellowish, with some white scales and long hairs; abdomen brown, paler 

 beneath, with white scales and long hairs, a narrow white median stripe from 

 base to apex, its posterior part broken into spots, some small spots on the 



