Page:Supplement to harvesting ants and trap-door spiders (IA supplementtoharv00mogg).pdf/134

 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 Mentone, 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 Remo.

, sp. n., Plate XV., fig. B, p. 198.

Adult female; length very nearly 14 lines; length of the cephalothorax, 5-1/2; 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. Sauvagii, 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