24O CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



112. Lithyphantes transversus, sp. nov. 



Plate XIV, Fig. 5. 



Length 4 mm. Cephalothorax, mouth-parts, sternum, and legs reddish, 

 the latter slightly darker on the femora, one specimen is more suffused with 

 fuscous; abdomen fuscous, above a broad basal transverse band, a middle 

 chevron behind two pairs of small spots, and an apical band, silvery; venter 

 with some basal spots, and two interrupted bands before the spinnerets, 

 silvery. Cephalothorax moderately narrow, plainly longer than femur I; 

 posterior row of eyes straight; P. M. E. less than diameter apart; M. E. form 

 a quadrangle longer than broad. Legs short. Abdomen nearly truncate at 

 base, nearly once and a half as long as broad, broadly rounded behind, slightly 

 depressed and quite thickly clothed with black hair. The femora plainly 

 shorter than in L. pulcher. 



Two specimens ; Sierra Laguna, El Taste. 



113. Lithyphantes medialis, sp. nov. 



Plate XIV, Fig. 3. 



Length 4-4.5 mm. Cephalothorax, legs, mouth-parts, and sternum wholly 

 reddish yellow; abdomen fuscous or black, with a narrow basal curved band, 

 a median row of four spots, the basal the largest, a lateral row of three spots 

 and an apical band, silvery; venter paler than dorsum; a spot behind the 

 epigynum, one in front of the spinnerets, and two each side, silvery. Cepha- 

 lothorax moderately narrow, depressed; posterior eye-row nearly straight, 

 P. M. E. almost their diameter apart; M. E. form a quadrangle higher than 

 broad. Legs quite long; femur I much longer than the cephalothorax. Ab- 

 domen less than once and a half as long as broad, broadly rounded at base, 

 more pointed behind, quite convex above, not very hairy. 



Several specimens from San Jose del Cabo, and Sierra 

 San Lazaro, Sept. 



114. Lithyphantes autumnalis, sp. nov. 



Plate XIV, Fig. 6. 



Length 3.9 mm. Cephalothorax dark reddish brown; legs more yellowish, 

 with fuscous bands at ends of femora, patellae, tibia;, and metatarsi; sternum 

 fuscous; abdomen fuscous, above a narrow curved basal band, two small 

 spots, and four or five other bands behind, connected on sides and sometimes 

 in the middle, forming a median stripe, all silvery; venter fuscous, with a spot 

 behind the epigynum and two elongate spots each side near the spinnerets. 

 Cephalothorax quite broad, more so than in allied forms, depressed; posterior 

 eye-row barely recurved; P. M. E. less than their diameter apart. Legs 



