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Show 826 MR. R, C. PUNNETT ON [Nov. 20, the dorsal and ventral ganglia, and the relative thickness of the epithelium and cutis, all show that this specimen belongs to the species delineata and not to curta. The nephridia, however, possess several openings on each side, and this fact, in view of Burger's statement (3. p. 601) that there is only a single pair in E. delineata, led me to examine a specimen of delineata which I procured whilst at Naples. Here there were five openings on one side and seven on the other, which seems to show that Burger's statement is probably inexact. In all the other members of this family whose excretory system has been worked out by Hubrecht (8. p. 115), Oudemans (4. p. 144), or by myself (5 & 6), there have always been more than one pair of ducts present, with the exception of E. hcmprichi, in which (5) they were altogether absent. EUPOLIA MELANOGRAMMA. Eupolia melanogramma Puunett (6), 1900, = Z?. quinquelineata, Burger (2). A very large specimen of this species was obtained, measuring 190 cm. in length and about 2-4 cm. in breadth at the thickest, with a dorso-ventral depth of 7 mm. Five dorsal lines were present, all being well marked and unbroken. This worm is one of the largest Nemerteans recorded, being only exceeded in bulk by a specimen of Lineus longissimus recorded by Mcintosh 1 and a specimen of Oerebratulus lucteus measured by Verrill (7. p. 435). The internal anatomy of the species has already been described by Punnett (6) and Biirger (2). Fam. LINEID^E. LINEUS ALBOVITTATUS Burger. A single specimen of this easily recognized species was procured. In the preserved state it measures about 9 cm. in length and 5 mm. in breadth at the middle of the body. It appears to be a fairly plentiful species with a wide distribution, having been recorded by Stimpson2 from Loo-choo, by Biirger (1) from Amboina, Timor, Matuka, and Mauritius, and by myself (5) from New Britain. CEREBRATULUS COLORATUS Biirger. A fragment 9 cm. long and 1 mm. in diameter is probably to be referred to this species, as tbe markings agree with the description given by Biirger (1). Unfortunately tbe anterior portion is missing. CEREBRATULUS TORRESIANUS, n. sp. (Plate LIV. figs. 1 a-e, 3, & 6.) About 4 cm. of fragments includiug the anterior end, and having an average width of about 1 -8 mm. The head-slits measured 2-5 m m. 1 British Annelids: The Nemerteans, p. 183. a Proc. Acad. Nat. Sci. Philad. vol. vii., 1856. |