CEPHALOPODA. — BERRY. 251 



Fig. 39. — Sepioteuthis austraUs $ [509], homy ring of fifth sucker from 

 base in ventral series of right third arm ; camera drawing from a 

 mount in balsam. 



Fig. 40. — Horny ring of large sucker from middle of tentacle club of same 

 specimen ; same scale. 



Fig. 41. — Horny ring of marginal sucker from middle region of tentacle 

 club of same specimen ; same scale. 



Remarks. — Although apparently not thoroughly typical, 

 the single specimen of this genus in the " Endeavour " 

 collection seems referable to the long known but still not 

 very common S. australis. It possesses the broad, oval fins,, 

 widest near the middle of the sharply tapering body, and the 

 plain colouring characteristic of preserved specimens of this 

 species, but it differs from the descriptions given by d'Orbigny 

 and McCoy in that the ventral arms are distinctly longest, 

 the formula being 4, 3, 2, 1, instead of 3, 4=2, 1. Their 

 examples were also considerably larger, and there are a few 

 minor specifications in which their descriptions and the 

 " Endeavour " specimen fail to tally. It should further be 

 noted for the latter that the horny rings of the suckers of the 

 sessile arms are scarcely "' tres-obtuses," as stated by 

 d'Orbigny (1845, p. 324). Some of these discrepancies may 

 later on prove of greater consequence than can be shown now. 



A horny ring of a diameter of 2.7 mm. from one of the 

 largest suckers (fifth from base) of the third right arm (Fig. 

 39) shows 27 sharp, conical teeth placed fairly closely. A 

 ring from a lateral sucker from the central portion of the 

 tentacle club (Fig. 41) is quite similar, but has only 24 teeth, 

 which are a little longer, narrower, and more widely spaced 

 than those of the sessile arm rings. This ring measures 3.3 

 mm. in diameter. Rings from two of the largest median 

 suckers of the tentacle club show respectively 22 (Fig. 40) 

 and 26 pointed, conical teeth, with relatively wide inter- 

 spaces. They measure 4.3 and 4.6 mm. in diameter. 



The dorsal lappet of the buccal membrane shows 5 suckers, 

 the next pair of lappets 5 each, the succeeding pair 6 each, the 

 right ventral 2, and the left ventral 3. One of the largest 



