ABRALIA. 31 



Shell pennate, lanceolate. 



Ex. E. Smithii, Leach, pi. 2, fig. 4. Shell, E. Smithii, 

 fig. 4, a. 



In this genus the tentacular arms are slender, feeble, 

 scarcely clubbed, and armed with hooks only. The shell is 

 pennate, lanceolate, without any appendix at the tip, and 

 the central ridge is narrow, keeled, and produced in front ; 

 there are five recent species known, and one fossil, the 

 former from the Mediterranean Sea and Indian Ocean. 

 The natives of the Polynesian Islands have a well-founded 

 dread of these animals on account of the great size they 

 sometimes attain. 



Species of Enoploteuthis. 



margaritifera, Ruppell. unguiculata, Molina. 



Owenii, Verany. Verany, Riippell. 



Smithii, Leach. 



Genus ANCISTROCHEIRUS, Gray. 



Fins occupying the whole side of the back, rhombic. 

 Tentacular and sessile arms with claw-like hooks. Sessile 

 arms with hooks only. 



Shell dilated at each end. 



Ex. A. Lesueurii, Ferussac, pi. 8, fig. 1. Shell A. 

 Lesueurii, fig. 1, a. 



There are no cups on the arms of Ancistrocheirus, and 

 the hooks are in two alternate series. The shell is narrow, 

 lanceolate, slightly convex, with a very broad central 

 groove, and with the ends produced ; there is but one 

 species, A. Lesueurii, Ferussac, from the Indian Ocean. 



Genus ABRALIA, Gray. 

 Fins subterminal. Tentacular and sessile arms with 



