4 Proceedings of the Royal Physical Society. 366 



Family IV. Philonexid^., d'Orbigny, 1838. 

 Tremoctopus, delle Chiaje, 1830. 



10. T. Doederleini, Ortm., Jap. Ceph., p. 642, pi. xx., 1888. 



.Japanese Region. 



11. T. microstoma, Joubin, Cepb. "Melita," pp. 218-225, cuts, 



1893.1 



12. T. hirondellei, Joubin, Ceph. atlant. nord, pp. 10-13, pis 



i., figs. 1, 2 ; ii., figs. 1-3, 1895. 

 Atlantic Region. 



Family VI. Octopodid^, d'Orbigny, 1838. 



Octopus, Lamarck, 1799. 



7a. 0. Hyadesi, Roch. & Mab., Moll. Cap Horn, p. H6, 1889. 

 Patagonian Region. 

 15a. 0. Brocki, Ortm , Jap. Ceph., p. 645, pi. xxi., fig. 4; pi. xxii., 

 fig. 1, 1888. 

 Japanese Region. 

 27a. 0. kagoshimensis, Ortm., Jap. Ceph., p. 644, pi, xxi., fig. 2, 

 1888. 

 Japanese Region, 

 34a. 0. robustus. Brock, Nachr. Ges. Gottingen, 1887, No. 11, 

 p. 317. 

 Australian Region. 

 35a. 0. Chierchiae, Jatta, Boll. soc. nat. Napoli, iii., p. 65, 1889. 



Peruvian Region. 

 44a. 0. pentherinus, Roch. & Mab., Moll Cap Horn, p. H7, 1889. 



Patagonian Region. 

 79. 0. microphthalmus, Goodrich, Ceph. Calcutta Mus., p. 20, 

 pl. v., figs. 83, 84, 1896. 

 Indo-Malayan Region. 

 80 0. pulcher, Brock, Ind. Ceph., p. 607, 1887. 



Indo-Malayan Region. 

 81. 0. chromatus, Heilprin, P. Ac. Philad., p. 324, pl. xvi. fig. 1, 

 1888. 

 1889. Ocioims chromatus (?), Heilprin, Bermuda Is., p. 167, pl. 15 



(no description). 

 New England Region. 



^ Gives an interesting account of the structure and disposition of the 

 hectocotylised arm, whilst siill enclosed in its sac. 



