CEPHALOPODA.—-BERRY. 1] 
Careful removal and dissection of the entire buccal mass of this animal have failed 
to reveal the presence either of an odontophore or of any structure thought to be homo- 
logous with the same, though the minute size and very brittle consistency of the parts 
in question unfortunately preclude absolute certainty in the matter. A certain special 
significance is thus afforded the specimen in the consideration of the writer, as it is the 
first Cirroteuthid he has encountered in which he has been unable to detect a radula, 
an organ the absence of which was formerly supposed to be a family peculiarity. 
Not wishing further to mutilate a type specimen, I have forborne any dissection 
of the dorsal cartilage. Hence the reference of the species to the genus Stauroteuthis 
must remain for the present somewhat provisional. 
In the specific name adopted it becomes a pleasurable courtesy to dedicate this 
curious and interesting creature to the leader of the Expedition, Sir Douglas Mawson. 
Family Pouypopipa. 
Genus Potypus Schneider, 1784. 
2.—? Potypus DUPLEX (Hoyle, 1885). 
21885. Octopus duplex Hoyle, Ann. & Mag. Nat. Hist., (5), v. 15, p. 226. 
? 1886. - Hoyle, Rep. Ceph. “ Challenger,” p. 90, pl. 7, fig. 5. 
Material.—A single immature female, taken by the “ Aurora” in 65 fathoms, off 
Maria Island, Tasmania, December 12th, 1912 [S.S.B. 448}. 
Fig. 5.—Polypus (duplex *). 
Radula. 
