ROSSIA. 133 



species being a native of tlie Indian Ocean^ judgment 

 must be reserved as to its British liabitat. 



ft Body short : fins semicircular, widely separated, and wing- 

 hke : sucker-ciqys having the edges of theii' rings smooth. 



Genus III. RO'SSIA^ Owen. PL VI. f. 1. 



Body oval : mantle more or less globidar ; its edges are free 

 all round, and not united with the head by a ligament : fins 

 small, placed behind on the middle of the sides : eyes covered 

 by a tegumentary lid, with a small opening : arms in unequal 

 pairs. 



Shell lanceolate, shorter than the mantle. 



Woodward made this a subgenus of Sepiola. The 

 difference consists in that genus having its mantle 

 united with the head by a ligament on the back. 



1. RossiA MACROso'MAf, Dcllc Chiajc. 



Sepiola macrosoma, D. Ch. Mem. iv. t. Ixxi. B. macrosoma, F. & H. iv. 

 p. 222, pi. NNN. f. 1. 



Body smooth, fleshcolour, irregularly covered with minute 

 purple specks : mantle semioblong : fins attached throughout 

 at the base : tentacles worm-hke and slender, as long as the 

 head and mantle together; club crested on each side, and 

 bearing extremely numerous and crowded minute suckers on 

 the inner or lower surface : head short and broad : eyes large 

 and prominent : arms lanceolate, the two lower pairs being 

 the largest ; all except the ventral pair are interwebbed at 

 their bases ; suckers globular, on long stalks, diminishing in 

 size towards the tips of the arms, and irregularly disposed in 

 3 or 4 rows. L. (exc. tent.) 2-5-3. B. (exc. fins) 1. 



Shell slightly expanding towards the point. L. 1-5. 

 B. 0-4. 



Habitat : Dublin Bay (BaU and Kinahan); estuaries 



* After Sir John Eoss, the arctic navigator, 

 t Having a large body. 



