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No described species approaches this except 0. macropus Riseo, in 

 which there is a marked distinction in coloring, and in the propor- 

 tional length of arms. 



Octopus pusillus. Corpus parvum, subglobosum : caput a?que 

 longum ac latum : oculi magni, protrusi : apertura parva : brachia 

 robusta, contorta, cito attenuata, pro longitudine 1, 2, 3, 4 ; acetabu- 

 lis magnis, confertis ; umbella ampla. Whole length about three 

 inches. Obtained at Mangsi Island, China Sea. In spirits. 



This may be the young of* some larger species like O. rugosus, but 

 in its present state it differs essentially. Others may be able to settle 

 the question. 



Octopus mollis. Corpus parvum, elongatum: oculi valde ex- 

 stantes: sipho bulbosus, elongatus: brachia gracilia, basi hand ap- 

 proximata, pro longitudine 4, 3, 2, 1 ; cupulis remotis : tunica (vino 

 conservata) ochracea rufo-punctata, ramusculis venosis ad dorsum 

 brachiorum notata. Long. 3 poll. Obtained at Tutuilla, Samoa 

 Islands. 



This also may be a young specimen. It is most like 0. Indicus, 

 but is inore delicate in all its characters than any species I have seen. 



Sepioteuthis arctipixnis. Corpus elongatum, ovato-lanceola- 

 tum, pinnis perangustis, arcuatis munitum : caput oblongum corpore 

 angustius : brachia sessilia, curta, crassa, pro longitudine 2, 4, 3, 1 : 

 brachia tentacularia a?que ac corpore longa, triente extremo dilatato- 

 lanceolato, series 4 acetabulorum gerente ; os magnum, cupuliferum : 

 tunica brunneo-purpurascens rufo-punctata, infra pallidior. 



OMMASTREPnES insignis. Corpus magnum, sub-cylindraceum, 

 postice angulatum : pinna trientem longitudinis corporis superans, 

 rhomboidalis, acutangularis, latior quam longa: sipho pyriformis, 

 arcuatus : caput breve, latum, supra convexum, infra excavatum : 

 oculi parvi : brachia sessilia, robusta, triquetria, subequalia, pro 

 longitudine 2, 3, 4, 1, trientem proximum paris inferioris acetabulis 

 privatum vel fimbriatum ; acetabulis parium lateralium majoribus : 

 bracbia tentaculai'ia gracilia, vix ad extremitatem dilatata, ad trientes 

 duos extremos acetabulis instructa : color (vino conservata) rufo- 

 cinerea. 



Shell 8£ inches long and about \ inch broad, the posterior two 

 inches, dilated into a paddle-shaped blade. 



Length of body 10 ; of head 2£; of fin 4 ; breadth of body 3 ; of 

 bead 2£ ; of fin 6 ; length of longest sessile arm 6j"> ; of shortest 4^ ; 

 of tentacular arms 10 inches. 



Obtained at Fcejee Islands. Dr. Holmes. 



The only species to which this bears any close relation is 0. todarus 



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