philonexidjE : tremoctopus. 27 



Perhaps young of former, no appearance of tubercles beneath, 

 both surfaces alike. 



a, h. South of Europe. Jn spirits. Presented by P. B. 

 Webb, Esq. 



2. TREMOCTOPUS. 



Arms moderate, triangular, upper surface flat, with two series of 

 subcylindrical sessile cups ; two upper pair longest, and webbed 

 nearly to the tip. Aquiferous openings four ; two above between 

 the eyes, and two below, and sometimes six smaller on each 

 side. 



Tremoctopus Belle Ckiaje, MS. 1835, quoted by D'Orbigny ; 

 Verany^ Cat. Anim. Invert. 1848. 



Tremectopus Gray, Proc. Zool. Soc. 1847, 205. n. 793. misprint. 



Philonexis sp. D'Orb. CepJial. Acet. 1838, 3IolL Viv. et Fos. i. 

 205. 



Ocythoe sp. Risso, Eur. Merid. iv. 



Octopus sp. Fenissac, Rang. 



Phisoniscus Rilppell, 3IS. Brit. Mm. 



* Webs moderate. Lower Arms shorter, free. Head large. 



1. Teemoctopus Quotanus. 



Body smooth, oblong, large, pointed behind ; white, marked with 

 red. Head large, smooth. Eyes large, prominent, without 

 eyelids, blue above. Water apertures four ; two iibove between 

 the eyes, and two below. Arms elongated, unequal ; order of 

 length, 1, 2, 4, 3; two dorsal pair longest, and webbed together 

 half their length. 



Octopus (Philonexis) Quoyanus D'Orb. Voy. dans VAmer. Merid. 



Moll. 17. t. 2. f 6—8. 1835, Mag. de Zool. 1835, 141. 

 Philonexis Quoyanus U Orb. Mon. Ccph. Acet. 96., Poulpes, t. 16. 



f. 68. 23. 1838, Moll. Viv. et Fos. I 202. t. 5. f. 1. 1845. 

 Octopus semipalmatus Owen, Trans. Zool. Soc. ii. t. 21. f. 12, 13. 



1836. 

 Hab. Lliddle of South Atlantic Ocean. 



** Arms all webbed. Head moderate, with several smxdl ocular 

 aquiferous Apertures. 



2. Tremoctopus violaceus. 



Body rather ovoid, truncated anteriorly, nearly smooth, violet. 

 Head short. Aquiferous apertures four, large ; two above and two 

 below ; and six small ones near each eye. Arms elongated ; order 



c 2 



