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Show 1876.] REV. O. P. CAMBRIDGE ON EGYPTIAN SPIDERS. 575 TETRAGNATHA FILIFORMIS. Eugnatha filiformis, Sav. et Aud. Egypte, p. 120, pl. ii. fig. 4. An immature male and two adult females of this species were found in the same situation as the last, near Alexandria. The great prolongation of the posterior extremity of the abdomen (increasing its length by two thirds) makes the determination of this Spider easy. TETRAGNATHA PELUSIA. Tetragnatha pelusia, Sav. et Aud. Egypte, p. 119, pl. ii. fig. 3. An immature female, of what 1 believe to be this species, was found near Cairo. Gen. SINGA, C. Koch. SlNGA AFFINIS, Sp. n. This Spider is similar in size, form, and structure to S. albovittata, Westr. (Epeira calva, Bl.) ; but an apparently constant difference in the abdominal pattern, and in some other points, convinces me that it is of a distinct though very nearly allied species. The upper-side of the abdomen in S. albovittata, has three broad longitudinal denticulate bands, the central one of a cream-white colour, and that on each side reddish yellow-brown ; these latter unite at their posterior extremities, and thus form a transverse band at that part; these three bands are immaculate ; the central one distinctly terminates well inside of the transverse portion of the lateral bands, represented on this portion, at most, by a small yellowish spot. In S. affinis, however, these bands are not so vividly traced, and the lateral ones are of a dull blackish-brown hue, broken in upon and mottled with pale yellowish white, and they are connected at their posterior extremities by a very narrow bar, or simple line, the central band thus running to the same length as the lateral ones; moreover the central band is divided longitudinally from end to end by a distinct tapering stripe of reddish brown (or other colour similar to that of the lateral bands) giving off lateral lines at intervals, which appear again to divide the central band in a transverse direction. The legs and palpi differ also from those of S. albovittata by being yellow, distinctly crenellated with brown; the falces also have a brown patch at each end, the legs and palpi of that species, as well as the falces, being of an immaculate orange-yellow. Another difference is observable in the four central eyes ; these in the present Spider form an exact square, while in S. albovittata the form is of a quadrangle rather longer than broad. Two females were found on low plants near Alexandria. SlNGA LUCINA. Epeira lucina, Sav. et Aud. Egypte, p. 345, pl. iH. fig. 4; Cambr; Spid. Palest. & Syr., P. Z. S. 1872, p. 299. Adult females of this Snider were found among rushes and plants in a marsh near Alexandria. Mons. Eugene Simon (Arachn. de France, torn. ii. p. 123) state-? 8 38* |