Note 142 — SUPPLEMENT TO TRAP-DOOR SPIDERS.

Mr. Pickard-Cambridge's description will be found at p. 292, below. In its characters this female spider (the male is unknown) most nearly resembles N. cæmentaria, but differs, among other points, in markings and in having one or more spines on the genual joint of leg, these spines being almost always absent in the same joint in cæmentaria. The nests of the two species are totally unlike.