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Show 532 REV. O. P. CAMBRIDGE ON [Nov. 25, near the tropics ; possibly this may be due to the generally rocky nature of the island. It will be very interesting to ascertain whether a closer search (which Mr. Melliss has promised to make) into the Spiders of St. Helena will sustain the general observations above made ; equally interesting also to know whether such observations are applicable to the Lnsect orders of the island. Fam. DYSDERIDES. Gen. SEGESTRIA. SEGESTRIA PERFIDA (Walck.), Hist. Nat. des Ins. Apt. tome i. p. 267. Segestria florentina, Hahn, Die Arachn. Bd. i. p. 5, t. 1. f. 1; Koch, Die Arachn. Bd. v. p. 72, t. 164. f. 385, 386. S. cellaria, Latr. Gen. Crust, et Ins. tome i. p. 88. Several adults of both sexes of this fine six-eyed Spider were contained in Mr. Melliss's collection. Its usual habitat is in crevices of rocky banks and interstices of walls; in these it spins a silken tube of considerable length, at the extremity of which it resides. I found this species not unfrequent in the island of Corfu in 1864, in holes and crevices of ancient olive-trees, whence it was exceedingly difficult to dislodge them. They would suffer themselves to be crushed rather than quit their abode; and the only way by which I could obtain an uninjured specimen was by screwing a small stick with a jagged end into the web and carefully drawing the whole fabric out, upon the chance of the inmate coming out with it. Gen. DYSDERA. D Y S D E R A RUBICUNDA, Koch, die Arach. Bd. v. p. 79, t. 165. f. 390, 391. Though very difficult to be distinguished in the female sex from D. erythrina (Walck.), I feel but little doubt concerning the identity of an adult female in the St.-Helena collection with D. rubicunda (Koch). Fam. DRASSIDES. Gen. C L U B I O N A (Bl.). CLUBIONA DUBIA, n. sp. (Plate XLII. fig. I.) Female adult, length 4 lines. The prevailing colour of this species, like that of many others of the genus, is yellow, clothed more or less all over with short, somewhat silky, yellowish-grey hairs. The cephalothorax is tinged with reddish, especially on its fore part, or caput; this portion is rather elongate, but yet broad and bluff at its fore extremity, much resembling the form of a British species, C. deinognatha (Camb.). The normal furrows and indentations are fairly marked, and are indicated by dusky lines, which converge to a small longitudinal indentation towards the hinder part ; two very fine dark longitudinal lines run |