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Show 218 REV. O. P. CAMBRIDGE O N [Mar. 4, T. civilis (Walck.). The markings, however, on the cephalothorax and sternum, as well as the annulation of the legs, are more distinct, and perhaps bear a rather nearer approach, both upon these parts and also on the abdomen, to T. atrica (Koch), from which the small size of the present species, independently of other characters, at once distinguishes it. The femora of the first pair of legs are also less suffused with dark reddish brown than in T. civilis; but in the palpi are perhaps contained the best distinguishing characters. The cubital and radial joints in both species bear the same (or very nearly the same) relative length to each other, the latter being rather longer than the former, enlarging on the outer side towards its extremity, where, as in T. civilis, there is a small red-brown corneous-looking apophysis; but in that species this apophysis is broadish and obliquely truncated at its extremity, while in the present species it is less strong, tapering aud pointed at its extremity ; the digital joint is also larger; and the palpal organs, although bearing the same general form and structure, are perceptibly different in their development; from their centre (connected with a strong corneous process) there issues a filiform spine, which, curving backwards and with a bold sweep round their inner margin, continues in a threadlike form quite round their extremity, ending on or close to their outer margin : an analogous spine exists in T. civilis ; but in that species it is much shorter and stronger, with a closer and far smaller sweep, and its point is not drawn out into a thread-like form. Several other processes analogous to each other are connected with the palpal organs of the two species ; but in the present they are, although longer and more prominent, yet proportionally not quite so strong. A single adult male was contained in Mr. Melliss's St.-Helena collection now under consideration. I feel no doubt that the example contained in a former collection, and recorded (I. c, supra) as T. atrica, is of the same species as the present, though that example had not attained maturity. It is possible that this may be the T. testacea, Sim. (Arane'ides nouveaux ou peu connus du midi de l'Europe, 1870, p. 10), found at Granada, in Spain ; it agrees with that species in the form of the digital joint and the radial apophysis as described by M. Simon ; but I am inclined to think it is distinct. Fam. SCYTODIDES. Genus SCYTODES. SCYTODES THORACICA. Scytodes thoracica, Walck. Ins. Apt. i. p. 270. An adult female was contained in Mr. Melliss's St.-Helena collection last received. Fam. PHOLCIDES. Genus PHOLCUS. PHOLCUS DISTINCTUS. Pholcus distinctus, Cambr. Linn. Soc. Journ. vol. x. p. 380, pl. xi. figs. 28-30. |