HI 



"TLRKA NOVA" EXPEDITION. 



FIG. 1. Ari/oitui/ta botti/rrl, radula, X 60. 



pad. and two lateral pads, just as in Berry's (<>/>. cit.) text-figure 5. The web extends 

 to about the third sucker laterallv. .-ind t<> about the fourth dorsally and ventrally. 



The highly-elevated suckers are very 

 large on the proximal two-thirds of the 

 arms, and very small distally. Round, 

 expanded, brown chromatophores are 

 present on the posterior dorsal surface, 

 and elongated transverse chromato- 

 phores on the head. Small, contracted, 

 round, dark chromatophores are dotted 

 about at the base of the suckers, and are 

 placed in two rows on the dorsal surface of the arms. Some of the arms have 

 had the surface abraded, so that it cannot be ascertained if the chromatophores were 

 in two rows on nil of them. The radula (Fig. 1) of the present 

 specimen differs considerably from that of A. ar</<>, Linn., as figured 



by Jatta ('96, pi. 18, fig. 19) e.g., the median tooth has three Fir;. 2. Ar<j,i- 



, .. , . ,, nnta bottgeri, 



denticles, and the first laterals are much smaller instead of being ot mandible', x 2. 

 the same size ; the second laterals have a longer base, which is 

 produced both in front and behind the denticle, and the marginal plates are not so 

 long in proportion to their width. 



Dimensions in 



End of body to ventral mantle-margin . 

 Breadth of mantle .... 

 Breadth of head .... 

 Length of funnel .... 

 1st right arm (to expanded portion) 

 2nd right arm ..... 

 3rd right arm ..... 

 4th right arm ..... 

 1st left arm (to expanded portion) 

 2nd left arm ..... 

 3rd left arm ..... 

 4th left arm . ... 



1 Hameter of largest sucker . 



50 



8 



9 



5- 



8 

 11 

 10 



s 



12 



mutilated 

 9 



1 



Divtrilnit/oii. Mauritius and Chagos Islands (E. A. Smith) ; Masbate and 

 Philippines (E. A. Smith, Hidalgo) ; China Sea and Australia (E. A. Smith) ; 

 Hawaiian Islands (Dall). 



2. 



/iitN violaceus, Delle Chiaje. Figs. 3, 4. 



(?) Trriii<i,-t,,i,nit rliiliii-i'iis, Delle Chiaje, Memorie sulla struttura e Notomia degli animali senza 

 vertebre del lli'gno di Napoli, I, pis. 70 and 71, 1829; Deserizione e Notomia degli 

 animali invertebrati della Sicilia citeriore I, Molluschi Cefalopodi e Pteropodi, I, p. 6, V, 

 p. 06, 1841. 



Octopus firm-illx, Souleyet, in Eydoux and Souleyet, Voy. l><>nitc, Zool., p. 13, pi. I, figs. 8-9, 

 1852, 



