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VIII. On the Annelida of the ' Porcupine '' Expeditions of 1869 and 1870. 

 By W. C. M'Intosh, C.M.Z.S. 



[Plates LXXI.-LXXIII.] 



Read May 19th, 1874. 



Part I. — EuPHEOSYNiD^, Amphinomid^, Aphroditid^, Polynoid^, Acoetid^, 



and SiGALiONiD^. 



X HE materials from which the following observations have been made were kindly 

 placed in my hands by the distinguished naturalists who superintended the dredging- 

 operations in these expeditions, viz. Dr. Carpenter, Dr. Gwyn Jefireys, and Prof. 

 Wyville Thomson. I have, in the first place, to record my obligations to these gentle- 

 men for their great courtesy. 



EUPHROSYNIDtE. 



Of the Euphrosynidse a minute example [Euphrosyne lanceolata, n. s.), about one 

 tenth of an inch in length was dredged in 173 fathoms in sandy mud and corals off 

 Ireland in 18G9. It is at once distinguished from the common E.foliosa by the shape 

 of the branchiae, which for the most part are divided dichotomously, and terminate in 

 lanceolate processes (PI. LXXI. fig. 1). As in allied forms, the inferior bristles are simple ; 

 the dorsal are almost all injured in the single example, only one or two with the curved 

 and serrated fork being visible. From E. borealis, (Erst., another British species, it is 

 likewise separated by the form of the branchiae and the structure of the bristles. The 

 late Prof M. Sars describes ' the brancliiae of his E. armadillo as having the apices 

 " conico-acuminatis," else I should have been inclined to unite the present form there- 

 with. 



AMPHINOMID^. 



Chloeia fucata, De Quatref ?, occurred in considerable abundance in the collection 

 made by Dr. Carpenter in 1870 ; viz. in 40 fathoms off Algiers, 60-100 fathoms east of 

 Cape de Gatte (six miles from shore), 45 fathoms eight miles N.W. of Cape Sagres, 92 

 fathoms in sandy mud on Adventure Bank, 128 fathoms off Tangiers, and 227 fathoms 

 off Cadiz — the bottom temperatures in the two latter being 55°. The species seems to 

 be most closely connected with the C. fucata of M. de Quatrefages^ from Mascate. It 

 differs, however, in the presence of four very distinct eyes — a larger pair in front on 

 each side, and a smaller pair behmd. 



• Forhandl. Vid.-Selsk. 1861, p. 55. = Anneles, ii. p. 390. 



VOL. IX. — PART VII. January, 1876. 3 H 



