252 



" ENDEAVOUR " SCIENTIFIC RESULTS. 



suckers from the lower lappet 

 measures 1.36 mm. in diameter. 

 Its ring (Fig. 42) is armed 

 mth 24 teeth, which are long, 

 narrow, and tapering on the 

 superior margin, though with 

 rather truncate points, be- 

 coming, on the inferior margin, 

 smaller, stouter, and more 

 pointed. A curious, stiff, trans- 

 versely ridged, tong vie -shaped 

 pad lies in the folds of mem- 

 brane between the ventral 

 lappets. I do not remember 

 having noticed mention in the 

 literature of any structure 

 of this sort. From its position and appearance one would 

 naturally infer an homology with the similarly situated 

 " spermatic pad " of the female Sepia. The extremity of 

 the left ventral arm lacks most of its suckers and at first 

 glance much resembles certain forms of hectocotylus, but 

 since a few minute suckers persist near the tip, whilst the 

 extremity of the left third arm is similarly affected, I take it 

 that the specimen is simply a normal ? which has suffered 

 abrasion of some of its suckers. 



Fig. 42.- — Sepiotevthis anstralis 

 $ [509], horny ring of hasalmost 

 sicker from third right lappet of 

 buccal membrane ; camera draw- 

 ing from a mount in balsam. 



Family SEPIOLID^E 



Subfamily ROSSIIN.'E. 



Genus Rossia, Owen, 1834. 



Subgenus Austrorossia, nov. 



Characters of subgeni;s so far as known those of typical 

 Rossia except — 



(1) The tentacle club is unusually long, more or less coiled, 

 and armed with an immense multitude of infinitesimal 

 suckers. 



(2) The suckers on the sessile arms are in two rows through- 

 out. 



(3) vSome of the suckers on all the sessile arms of the cf 

 suffer sexual modification, i.e., enlargement. 



