OXYC'HOTEUTHIS. 169 



0. LICHTENSTEINII, Fei*. and Orb. PI. 73, figs. 295297. 



Head large, with eight longitudinal postero-dorsal ridges ; 

 body elongate, narrowed posteriorly, produced ; fins about one- 

 third the length of the body, triangular-sagittate, narrowly pro- 

 duced behind ; sessile arms in length 4, 3, 2, 1. externally webbed ; 

 tentacles as in 0. Bergii (= 0. Banksii). Shell with a long 



end-conus. Length, 10 to 18 inches. 



Mediterranean. 



The larger size, posteriorly produced iins, and different shell, 

 will distinguish this species from 0. Banksii. 



0. KKOIINII, Yerany. PI. 73, figs. 298, 299. 



Body stout, cylindrical, acuminate behind; .(ins large, rhom- 

 boidal, half the length of the body ; head with eight postero- 

 dorsal ridges. Shell with a rather broad lamina. 



Length, 1-0 inch. 



Messina. 



Notwithstanding differences of proportion, etc., it may be 

 that this is the young of 0. Liclitenxteinii. Only a single speci- 

 men obtained. 



0. DUSSUMTERT, Orb. PI. 74. tigs. 300, 301. 



Body elongate, subcyliudrical. very finely shagreened with 

 small, acute tubercles ; fins short, together rhomboidal ; sessile 1 

 arms unequal, lengths 2, 4, 3, 1 ; tentacles very slender, clubs 

 not expanded, with thirty hooks in two series. Shell narrow, 

 the apex with a very long, conical, acute, solid tip. 



Total length, 20 inches; of body, (> inches. 



200 miles N. of Mauritius. 

 0. RUTILU.S, Gould. PI. 74, fig. 302. 



Body broad in front, narrowed to a point behind ; fins large, 

 heart rhomboidal, half as long as the body; head large, sub- 

 quadrate; sessile arms half as long as body, triquetrous, relative 

 lengths 4, 3, 2, 1 ; cupules on large pedicels nearly in a single 

 line ; tentacles one-third longer than the arms, stout, cylindrical, 

 with nine or ten hooks on long peduncles. Color very brilliant, 

 violet and salmon, with bluish and golden metallic reflections. 



Total length, 8*5 inches. 



Near Sydney, N. S. Wales. 



Allied to 0. Banksii, but different in proportions and in 

 coloring. 



22 



