THE ZOOLOGICAL STATION AT NAPLES. 355 



Oxford, a tried investigator, to study the origin of the excretory organs 

 and other points in the development of the Crustacea, and more particu- 

 larly the fertilisation process in the Decapods, and also to enable Mr. 

 W. Wallace, B.Sc, Barry Scholar of the University of St. Andrews, to 

 study viviparous fishes. 



APPENDIX I. 



Report on the Occupation of the Tahle of the British Association in the 

 Zoological Station at, Naples during the months of Fehruary, March, 

 Apnl, and Mat/, 1901. 



The Statocysts of Cephalopoda. By E. Hamltn-Harris, F.H.M.S., F.Z.S. 



Thanks to the kindness of the Committee of the British Association 

 for the Advancement of Science, I was permitted to occupy their table 

 from February 22 until June 3. 



A great part of this time was occupied in the examination and study 

 of the fauna of the Gulf of Naples. 



My special object, however, in visiting Naples was to institute a 

 thorough research into the organs for the maintenance of equilibrium 

 (Gleichgewichtsorgane) in the Cephalopoda. 



Of the Cephalopod species occurring in the Gulf of Naples the following 

 were placed at my disposal and made use of by myself : — 



Fam. — Ommastrephid^. 



Todaroj^sis Veranyi 

 Fam. — Onchii. 



Veranya sicula 

 Fam. — Sepiolini. 



Sepiola rondihtii 



Rossia 7,iacrosoma 



Fam. — Sepiarii. 



Sepia officinalis 

 Sepia Orhignyana 

 Sepia elegans 



Fam. — LoLiGENii. 



Loligo vulgaris 

 Loligo marmorce 



Fam. — Argonautid^. 

 Ocythoe tuherculata 



Fam. — OcTOPiD^. 



Octopus vulgaris 

 Octopus macropus 

 Octopus difilipii 

 Eledone moschata 

 Eledone Aldronanti 



Young specimens as well as embryos of certain of the above species 

 were also fixed and preserved. 



Two of them, viz., Ocythoe tuberculata and Veranya sicula, are pelagic 

 and comparatively rare. I was therefore able only to obtain a few 

 specimens of these. 



The only existing work on the so-called auditory organ of the 

 Cephalopoda is that of Owsjannikow and Kowalevsky, published in 1867 

 in ' Memoires de I'Academie imperiale des Sciences de St-Petersbourg,' 7° 

 serie, tom. xi.. No. 3. 



This valuable memoir, containing as it does the result of extensive 

 microscopical research, is, however, thirty-three years old, and science and 

 microscopical methods have during that period made wonderful strides. 

 It will therefore be readily seen that after so many years a more detailed 

 histological examination of the same subject should yield important results. 



A A2 



