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Show 554 REV. O. P. CAMBRIDGE ON EGYPTIAN SPIDERS. [June 20, Fam. PALPIMANIDES. Gen. PALPIMANUS, Duf. PALPIMANUS HAMATINUS ? Palpimanus hamatinus, C. Koch, Die Arachn. iii. p. 21, pl. 80. fig. 179. A female, which I take to be perhaps of this species, was found in the neighbourhood of Alexandria in 1864 ; and it appears to be identical with examples found in Palestine in 1865. I have since, however, had occasion to doubt whether these are, or not, the true P. hamatinus of C. Koch; they are certainly different from a closely allied species which I found subsequently in Corfu and at Smyrna. This latter species may he the true P. hamatinus, C. K., coming, as it does, nearly from the same region as the type of Koch's species. The Spiders of this genus are very nearly allied to each other, and are remarkably similar in their general characters and appearance ; and it will require a close comparison of their respective genital organs to determine the species with any certainty. PALPIMANUS SAVIGNYI. Platyscelum savigngi, Aud. in Sav. Egypte, p. 167, pl. vii. figs. 6, 7. Two females, certainly distinct from that last noted, were found in ascending the Nile from Cairo to Thebes. My note of the exact locality has been mislaid ; but I feel little doubt that these are of the same species as that mentioned in the synonym above quoted. Fam. ERESIDES. Gen. ERESUS, Duf. E R E S U S PETAGN^E. Eresus petagna, Aud. in Sav. Egypte, pl. iv. fig. 11. Adult and immature females of this species-were found under stones near Alexandria. But for M. Simon's opinion (" Note sur la famille des Eresidae," Ann. Soc. Ent. Fr. 5e ser. torn. iii. 1873, p. 357), I should have considered this species to have been identical with Eresus imperialis, Duf. (= E. frontalis, Latr.) ERESUS DUFOURII. Eresus dufourii, Aud. in Sav. Egypte, p. 151, pl. iv. fig. 7. Immature examples of this very distinct species were found on low plants on the edge of the desert above Assouan. I have received from Italy adults of both sexes of a species which I believe to be identical with the present. It is a small species, the adult male measuring only 2| lines in length, while that of the adult female is no more than 3 lines. |