NARRATIVE OF THE CRUISE. 



271 



Ocean, however, a very fine new species (Cirroteuthis magna), measuring between 

 2 and 3 feet, was dredged from a depth of 1375 fathoms at Station 146. Unfor- 

 tunately it was not so well preserved as to be fit for minute anatomical examination, 

 but the form of the dorsal cartilage, which is elongated transversely instead of longi- 

 tudinally, is quite sufficient to establish its specific distinctness from the typical 

 Cirroteuthis miilleri. 



"Two other specimens, each representing a distinct species (Cirroteuthis pacifica and 

 Cirroteuthis meangensis) , together with a fragmentary and a young animal, were found at 

 different points in the Pacific Ocean. 



" One of the most remarkable forms in the collection is apparently somewhat allied to 

 this genus ; it is a small creature obtained on the surface in the neighbourhood of the 

 Kermadec Islands, which has been named Amphitretus pelagicus (see fig. 106). It differs, 

 however, from all Cephalopoda hitherto known in that the mantle is firmly united to the 



Fig. 106. — Amphitretus pelagicus, n. geu. et sp. ; somewhat enlarged. 



siphon, leaving two openings into the branchial cavity, one on either side, immediately 

 below the eyes, which are closely approximated on the dorsal surface. The arrangement 

 of the suckers in a single row. and the webbing of the arms, almost as far as their 

 extremities, are points of resemblance to Cirroteuthis, but the cirri characteristic of this 

 latter genus are wanting. 



"In the South Atlantic (Station 126) there was found in the dredge a curious 

 gelatinous specimen, of pale yellowish -grey colour, with red chromatophores. The body 

 is prismatic, the dorsal surface being flat and the ventral rising into a median rounded 

 ridge. The eyes are prominent, and situated about midway between the extremities of the 

 arms and the posterior end of the body (see fig. 107). It seems desirable to make this the 

 type of a new genus, and the name Japetella prismatica is given to it. Resembling this 

 last in the consistency of the body and some other characters, and possibly congeneric with 

 it, is another form represented by a single specimen from the surface of the Pacific, 



