1908.] NATURAL SCIENCES OF PHILADELPHIA. 349 



wise it is unknown from the Pacific region. Except that their paleoli 

 have more produced points than Mahngren figures, these specimens 

 agree exactly with his account. A portion of a tube is 6.5 mm, in 

 diameter, with a lumen of 4 mm. and very fragile walls of fine silt. 



Stations 4225, Boca de Quadra, southeastern Alaska, 149-181 

 fathoms, dark green mud ; 4258, vicinity of Funter Bay, I.ynn Canal, 

 300-313 fathoms, mud. 



Amphicteis alaskensis Moore. 



Amphicteis alaskensis Moore, Proc. Acad. Nat. Sci. Phila., 1905, pp. 846-849, 

 PI. XLIV, figs. 1-4. 



Taken at Stations 4274, Alitak Bay, at a depth of 35-41 fathoms 

 on a bottom of green mud with some fine sand, and 4223, Boca de 

 Quadra, southeastern Alaska, 48-57 fathoms, soft green mud. 



Amphicteis glabra Moore. 



Amphicteis glabra Moore, Proc. Acad. Nat. Sci. Phila., 1905, pp. 849-851, 

 PI. XLIV, figs. 5-8. 



A small portion of a tube is peculiarly elastic and springy and is 

 covered with a la3^er of brownish flocculent sediment. 



Station 4227, Behm Canal, in the vicinity of Naha Bay, 62 fathoms, 

 bottom of dark green mud and fine sand. 



Amphicteis scaphobranchiata Moore. 



Amphicteis scaphobranchiata Moore, Proc. Acad. Nat. Sci. Phila., 1906, pp. 

 255-257, PI. XII, figs. 54-61. 



Taken at the tj-pe locality only, Station 4201, off Fort Rupert, 

 Vancouver, in Queen Charlotte Sound, 138-145 fathoms, soft green 

 mud, sand and broken shells. 



Melinna denticulata Moore. 



Melinna denticulata Moore, Proc. Acad. Nat. Sci. Pliila., 1905, p. 859, PI. 



XLIV, figs. 9 and 10. 

 Melinna cristata Moore, id., pp. 851-853. 



The original description of this species was inadvertently placed 

 under the name of M. cristata, which, as is well known, has already 

 been employed by Sars, The name denticulata was, however, correctly 

 used in the description of the figures on page 857. 



The type and only specimen was taken at Station 4258, in the 

 vicinity of Funter Bay, Lynn Canal, on a bottom of mud, 300-313 

 fathoms. 



Melinna cristata (Sars) Malmgren. 



Melinna cristata Malmgren, Ofvers. Kgl.-Vet. Akad. Forh., 1865, p. 371, 

 Two well-preserved specimens in their thick-walled nuid tubes 

 represent this species. They were both dredged at Boca de Quadra, 

 23 



