492 Dr. H. Miiller on the Male of the Argonaut 



ribus, induplicatis ; antheris lineari-oblongis, rugosis, glandu- 

 loso-pilosulis ; drupa olivseformi. — New South Wales, County 

 of Camden. — (v. s. in herb. Hook. — spec, in flor. Illawarra, 

 M' Arthur — sp. in fruct. Five Islands district, A. Cunning- 

 ham.) 



These specimens may be said to be from the same locality, for 

 Illawarra, though on the mainland, is in the Five Islands district, 

 and opposite to those islands in lat. S. 34° 50', a little to the 

 south of Port Jackson. From Cunningham's journal, he does 

 not appear to have visited them, and all his specimens collected 

 about Illawarra are stated as from " Five Islands." The leaves 

 are larger than in the two foregoing species, are shining, smooth 

 and coriaceous, 5| inches long, 2| inches broad, on a petiole 

 $ of an inch in length ; those of the specimen from Illawarra are 

 smaller, and evidently much younger ; the panicle is 3£ inches 

 long, with its branches less spreading *. 



XLI. — Note upon the Male of the Argonaut and the Hectocotylus. 

 By Dr. Henry Mulleh, of Wurzburgf. 



Delle Chiaje % and Cuvier§ were the first to describe the Hec- 

 tocotylus of the Argonaut (Trichocephalus acetabularis) , and the 

 Hectocotylus of Octopus granulosus, which were considered by 

 them to be worms parasitic upon the Cephalopods. Later, 

 Costa || asserted the Hectocotylus of the Argonaut to be the sper- 

 matophore of this creature. 



Kolliker^" soon afterwards discovered a third Hectocotylus 

 upon Tremoctopus violaceus (D. Ch.), and was led to regard the 

 three Hectocotyli as the males of the Argonaut, Octopus and 

 Tremoctopus, which had in vain been previously sought for. 



Guided by the observations of Madame Power**, Kolliker sup- 

 posed that the male Argonauts (the Hectocotyli) were developed 

 like vermiform embryos, in separate groups of ova. 



Last year M. Veranytt described a species of Octopus (0. ca- 

 rena) which had the right arm of the third pair more developed 

 than the rest, and provided with an oval globe at its free extre- 

 mity. 



* A representation of this species, with analytical details of its floral and 

 carpological structure, will be given in plate 12 of the ' Contributions to 

 Botany,' &c. 



f From the Annales des Sciences Naturelles, vol. xvi. No. 3. 



j Memorie, vol. ii. p. 223. 



§ Annales des Sciences Naturelles, 1819. 



|| Annales des Sciences Nat. 1837- 



% Bericht von der zootomischen Anstalt zu Wurzburg, 1 849. 



** Annales des Sciences Nat. 1841. 



ft Mollusques Mediterraneans, Genes, 1851. 



