182 OMMASTREPHES. 



Doubtful recent species. 

 O. LATiOKi's. Owen. PI. SI. fig. ;-5T<) ; pi. X'2. lig. 575. 



Body siibgelatinous. bluish-white, red and In-own 

 oval, elongate, ending in an acute point ; arms equal ; trnlaeles 

 with small cups; iins thin, rounded, terminal. 1 unite with 

 this spec-it's Cranclua perlucida, Rang (lig. :>7.~>). following 

 Gray; but 1 see no reason why they should be united, except 

 that they are both very young animals. 



Atlantic Ocean, near the Equator. 

 O. ARABICUS, Khrcnberg. 



Body round, gradually attenuating into an obtuse round tail; 

 fins rhomboidal. including halt' the body and the tail ; arms with 

 two rows of equal cups; clubs of tentacles with five rows of 

 cups, three middle rows largest; rings toothed. Shell narrow, 

 cartilaginous. 



Volcanic island of Ketumbal, Red Sea. 



Not figured; seems peculiar in possessing live rows of eups 

 on the clubs. 



O. GrRONOVII. Fer. and Orb. 



Founded on the Sepia of Uronovins Xoophyl. iMt. X. MIL'S. 

 whose short diagnosis will suit any species of Loli<j<> or ( hnmas- 

 trephes hitherto described or hereafter to be described. 



Indian Ocean. 

 O. BlANCONII, Verany. PI. 82, lig. :J77. 



Body cylindrical, tapering behind; tins cordate, depressed. 

 one-half the length of the body; arms short, of nearly equal 

 length; tentacles two-thirds the length of the bodv. Shell with 

 convex margins, terminating in a small cone; eyes covered with 

 skin. Length, less than an inch. 



Messina (abundant). 



Kvidcntly a young animal, the generic relations of which are 

 somewhat uncertain. The form of the animal and shell is very 

 like Onychoteuthis Krohnii. but it wants the tentacular hooks 

 of that species. 



O. A VRKSII. Uabb. 



Carpenter Report, W. ('. Mollusca. Ill:), lili 1. ]*<;:{. -San 

 Clcmcntc Islands." This species was never described by -Mr. 

 (iabb. Perhaps 0. Tryonii, Gabb is the- same species. 



