366 Proceedings of the Royal Physical Society. 
Family IV. PH1Ltonexip#, d’Orbigny, 1838. 
Tremoctopus, delle Chiaje, 1830. 
10. T. Dederleini, Ortm., Jap. Ceph., p. 642, pl. xx., 1888. 
Japanese Region. 
11. T. microstoma, Joubin, Céph. ‘“ Melita,” pp. 218-225, cuts, 
sos? 
12. T. hirondellei, Joubin, Céph. atlant. nord, pp. 10-13, pls. 
ifs. b, 25 iy sfigss: 1-3, 1695. 
Atlantic Region. 
Family VI. Ocroropip&, 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, pl. xxi., fig. 4; pl. xxil., 
fig. 1, 1888. 
Japanese Region, 
274.0. kagoshimensis, Ortm., Jap. Ceph., p. 644, pl. xxi, fig. 2, 
1888. 
Japanese Region. 
344.0. robustus, Brock, Nachr. Ges. Gottingen, 1887, No. 11, 
powlt. 
Australian Region. 
354.0. Chierchiz, Jatta, Boll. soc. nat. Napoli, iii., p. 65, 1889. 
Peruvian Region. 
444.0. 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. Octopus 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 still enclosed in its sac. 
