232 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Sbr. 



tibia plus patella; I; A. M. E. hardly their diameter apart, rather larger than 

 the A. S. E.; P. M. E. much smaller, about three times their diameter apart 

 and farther from the larger P. S. E. ; mandibles strongly geniculate; sternum 

 scarcely longer than broad, somewhat narrowed in front. Legs moderate, 

 five pairs of spines under tibia I, two pairs under metatarsi I, two above on 

 tibia IV. Epigynum shows a transverse, rounded corneous plate, emarginate 

 in front, and two dark cavities behind. 



Three specimens; San Francisquito and El Taste. 

 DICTYNID^E. 



80. Amaurobius peninsulanus, sp. nov. 



Plate XIV, Fig. 23. 



Length ? 10 mm., $ 8.5 mm. Cephalothorax reddish, blackish around 

 eye-region; mandibles dark red-brown; legs and sternum yellowish; abdo- 

 men brownish, darker above; the <3 shows a pale spot at base. P. M. E. 

 about two and a half times their diameter apart, much farther from the 

 P. S. E. ; mandibles large, prominent at base. Legs rather short, much 

 longer in the S , especially the first pair; three pairs of spines under the tibia 

 I in 9 , more numerous in S . The epigynum shows an elevated part each 

 side, separated by a smaller and shorter middle piece. The tibia of the £ 

 palpus has two large projections, one spreading with a sharp point, the other 

 erect and blunt at tip. Two smaller projections just below the insertion of 

 the tarsus, the latter is short and curved, with a large palpal organ. 



Male and female from San Jose del Cabo. 

 81. Dictyna avara, sp. nov. 



Plate XIV, Fig. 19. 



Length 5 mm. Cephalothorax dark red-brown, darkest near the eye- 

 region; mandibles same color; sternum brownish; legs paler, more yellowish, 

 except the anterior femora, which are almost red-brown, covered with white 

 and black hairs; abdomen whitish, sparsely clothed with blackish hair, form- 

 ing a faint, irregular, central folium, and a stripe each side. Cephalothorax 

 rather broad. Abdomen very large, once and a half longer than broad. 

 Epigynum has the inner outline of the anterior cavities continuous with the 

 posterior ones. 



One female ; no locality. 



82. Dictyna sublata Hentz. — Three specimens from 

 San Jose del Cabo. 



