24 U.S. NATIONAL MUSEUM BULLETIN 291 



B. abyssicoTa was represented by one specimen 44 mm in mantle length. 

 Voss gave a detailed description of the specimen and in his remarks 

 mentioned the possibility of the presence of two species of Bathyteuthis 

 based on the presence or absence of light organs, a feature that gen- 

 erally merits specific distinction. 



Dell (1959) worked up the B.A.N.Z.A,R,E. cephalopod collections. 

 Although no specimens of B. ahysnicola were captured during the ex- 

 pedition, Dell included the species in his comprehensive list of the 

 cephalopod fauna of the Antarctic Province. 



Powell's (1960) compilation of Antarctic and Subantarctic Mol- 

 lusca lists the family Bathyteuthidae and Bathyteuthis Hoyle with the 

 type locality in the Southern Ocean. Powell listed only Odhner's 

 (1923) record for the range of the species in these waters and omitted 

 the Antarctic and Subantarctic specimens recorded by Hoyle (1912), 

 Thiele (1921), and Robson (1932). 



A. H. Clarke (1962) gave the distribution of B. abyssicola as cosmo- 

 politan in temperate and tropical seas at depths of 0-2000 fathoms 

 (0-3660 m) ; apparently he overlooked all the records from boreal 

 waters. 



M. R. Clarke (1966), in a work published since the present research 

 was completed, reviewed the previous records of B. abyssicola and 

 gave additional records from the collections of the Discovery II. 

 Clarke estimated the vertical range and ecological conditions occupied 

 by the species. 



Roper (1968) gave preliminary descriptions of two new species of 

 Bathyteuthis; B. iacidifera and B. berryi are described in greater de- 

 tail in the present work, and information about their distribution 

 is included. 



Family Bathyteuthidae Pfeffer, 1900 



Bathyteuthidae Pfeffer, 1900, p. 152, 171.— Chun, 1903, p. 68.— ^Hoyle, 1904, p. 

 33 ; 1904a, p. 3, 14 ; 1909, p. 271.— Chun, 1910, p. 185.— Berry, 1912, p. 645.— 

 Hoyle. 1912, p. 282.— Naef, 1921. p. 535 ; 1922, p. 298.— Grimpe, 1922, p. 45.— 

 Naef, 1923, p. 251, 809.— Grimpe, 1925, p. 95.— Thiele, 1935, p. 970.— Robson, 

 1948, p. 116.— Voss, 1956, p. 142.— Powell, 1960, p. 185. 



Benthoteuthidae Pfeffer, 1912, p. xx, 323.— Berry, 1912, p. 645.— Naef, 1916, 

 p. 14.— Joubin, 1920, p. 57.— Thiele, 1921, p. 453.— Naef, 1921a, p. 48.— Joubin, 

 1924, p. 74. 



Not Benthoteuthidae — Robson, 1921, p. 4.32 (for Chunotciithis minima). 



Type-genus. — Bathyteuthis Hoyle, 1885. 



Diagnosis. — Mantle-funnel locking apparatus simple with straight 

 ridge and groove; buccal connectives attach dorsally to arms IV; club 

 short, miexpanded, with more than four rows (8-10) of numerous, 

 small suckers; arms with two, increasing to more than two rows (4) 

 of irregularly arranged suckers; lappets of buccal membrane with 



