310 Ruth D. Turner 



except in rare cases and in the case of a few types, he made no mention of this material. 

 Much of the Blake material is in the Museum of Comparative Zoology and in most 

 cases the specimens figured and so labelled by Dall, are contained in this collection. 

 A catalogue of all of the types of Western Atlantic scaphopods in the Museum 

 collection is appended to this report for the convenience of interested workers. 



Henderson gave an excellent historical account of the work done in this group 

 up to 1920, consequently only a brief bibhography is given here. No attempt has 

 been made to describe the various species, for descriptions and figures may be found 

 in the works of Watson (1895); Dall (1889); Pilsbry and Sharp (1898) and 

 Henderson (1920). The classification to genera and subgenera follows that of 

 Henderson. 



Maps indicating the course of the Atlantis during the two circumnavigations of 

 Cuba in 1938 and 1939, together with a complete hst of the stations, are given by 

 Chace (1940). Unfortunately, several locahties where the Blake and the Atlantis 

 did a small amount of dredging were not given station numbers. Consequently in 

 this report where reference is made to the ship without station number it is because 

 none was allotted. 



NEW SCAPHOPOD RECORDS FOR THE WESTERN ATLANTIC 



Dentalium (Dentalium) laqueatum Verrill 

 Dentalium laqueatum Verrill 1885, Trans. Connecticut Acad. Arts and Sci. 6, pt. 2, p. 431, pL 

 44, fig. 18; Henderson 1920, Bull. U.S. Nat. Mus. No. Ill, p. 23, pi. 1, figs. 6-7. 



Notes. Though Henderson fists a large number of lots for this species, they are 

 largely restricted to the region of Cape Hatteras, North CaroUna and to the Lower 

 Florida Keys. The following Atlantis records extend our knowledge of its distribu- 

 tion to Cuba. One exceedingly large specimen from off Punta Alegre, Cuba, measured 

 85 mm in length, or 23 mm longer than any previously recorded. Henderson's sub- 

 species regulare appears to be of doubtful value. Its range overlaps that of the 

 typical form and, in addition, in the typical form there appears to be a wide range of 

 variation in the strength of the secondary costae. 



Records. CUBA: Atlantis, station 2963, off Bahia de Cochinos, Las Villas (N. Lat. 22° 07'. 

 W. Long. 81° 08') in 180-190 fathoms; Atlantis, station 2982E, off Punta Alegre, Camaguey (N; 

 Lat. 22° 45'; W. Long. 78° 45') in 150-180 fathoms; Atlantis, station 2999, off Bahia de Matanzas, 

 Matanzas (N. Lat. 23° 10'; W. Long. 81° 29') in 145-230 fathoms. 



FLORIDA: off Carysfort Light, Key Largo in 66-1 17 fathoms (L. A. Burry — 5 lots); off Beacon 

 D, Key Largo in 65-108 fathoms (L. A. Burry — 2 lots); 3j miles N.E. of Pacific Reef, Key Largo 

 in 66 fathoms (L. A. Burry). 



Dentalium (Dentalium) obscurum Dall 

 Dentalium gouldii obscurum Dall 1889, Bull. Mus. Comp. Zool. 18, p. 425, pi. 27, fig. 4. 

 Dentalium obscurum Dall, Henderson 1920, Bull. U.S. Nat. Mus. No. Ill, p. 32, pi. 3, figs. 1, 3. 



Notes. This is an exceedingly rare though probably widely distributed species. 

 Dall thought it was only a variety of gouldii but I agree with Henderson that it is 

 quite a different species. It has previously been known only from the Barbados, 

 where it has been collected several times. 



Records. CUBA : Blake, station 62, off Habana in 80 fathoms. 



