2G0 SPECIFIC DESCRIPTIONS OF 



of both species is similar, but M. Simon does not 

 mention this portion of the structure of the male he 

 describes of Ct. Sauvagii. 



The adult male of Ct. Moggridgii above described, 

 was found behind the stones of an old wall at Men- 

 tone, but not in any kind of nest. 



Nest-making, and excavating for that purpose, is, 

 probably, no part of the work of the adult males in 

 this and other allied genera, and hence we can see a 

 reason for differences in the development of the caput, 

 and the denticulation of the falces. The usual habitat 

 of the females and their nests is in damp and shady 

 spots, whereas Ct, Sauvagii constructs its nests in dry 

 exposed banks. 



Habitat. Mentone and San Eemo. 



Cteniza Californica, sp. n., Plate XV., fig. B, 

 p. 198. 



Adult female; length very nearly 14 lines; length 

 of the cephalothorax, 5J ; greatest breadth of ditto, 5 ; 

 breadth of fore part of caput, 4 lines ; length of caput 

 rather over 3 lines. 



The cephalothorax of this spider is rather broader 

 in proportion to its length than that of Ct. Sauvagiij 

 Walck., Sim. = Ct, fodiens, Walck. The convexity, or 

 elevation, of the caput is also less, but that of the 

 thorax is greater, so that (when looked at in profile) 

 the profile line of the two forms a tolerably even and 

 continuous slope, interrupted only by the thoracic 

 fovea ; the profile, however, of the occiput is curved. 



The thoracic fovea, or junctional indentation, is 

 strong, deep, and semilunar in form, the horns of 

 the crescent pointing forwards; the other normal 



