MOLLUSCA. 831 



Sp. Argonauta Argo L., POLI 1. 1. Tab. 40 43, BLAINV. Malac. PL i. fig. i, 

 PI. i. bis; HANG, GUERIN Magas. de Zool. 1837, Moll. PL 8688, from 

 the Medit. Sea; Argonauta tuberculata LAM., EUMPH. Amb. Rariteitk. 

 Tab. 1 8, figs, i, 4, D'ARGENV. Conchyl. PL 5, fig. c, from the Indian 

 Ocean, &c. 



Note. Here would seem to be the place of Bellerophon MONT. 

 fossil, from the oldest strata. 



Octopus LAM. Body naked. Two horny lamellae in the back, 

 inclosed in mantle. (Polypus of the ancients.) 



Amongst these naked eight-armed Cephalopods there were some species 

 of which, as in the last, females alone were known, and of these it is that 

 the hectocotylus of the male (now in some instances known) has been found 

 attached in the sac of the mantle or in the funnel, as Octopus granulosu* 

 LAM. and Tremoctopus violaceus DELLE CHIAJE. See above, p. 820. 



Octopus auct. With a double row of suckers in the arms. 



Sp. Octopus vulgaris, Sepia Octopus L., BLAINV. Malacol. PL 2, fig. i, Cuv. 

 R. Ani., ed. HI., Moll. PI. i. 



Tremoctopus DELLE CHIAJE. 



Sp. Tremoctopus violaceus DELLE CHIAJE, Memorie, Tab. 70, 1830. 



Eledone LEACH (eXe^tovrj ARISTOT.). With a single row of aceta- 

 bula in arms. 



Sp. Octopus moschatus LAM., BLAINV. Malacol. PL 2, fig. 2, Cuv. R. Ani., 

 ed. illustr., Moll. PL 2, fig. i. 



Cirroteuthis ESCHRICHT. 



Sp. Cirroteuthis Mulleri, ESCHRICHT Nov. Act. Acad. Cces. Carol. N. Cur. 

 xvni. 2, 1838, pp. 627634, Tab. 4648. A broad membrane connects 

 the arms almost as far as the extremity. This species is a native of the 

 coasts of Greenland. 



