26 



REPORT — 1844. 



This number far exceeds that of any other country. In the present im- 

 perfect state of our knowledge it would be impossible to give an accurate 

 statement of their geographical distribution on our shores. The attempt 

 which we shall now make must therefore be considered little more than an 

 approximation to such a result. For this purpose we shall consider it sufficient 

 to divide the coast of the British Islands into three principal districts, viz.— 



1st. The north and east. This division will comprise the north and east 

 coast of England and Scotland, which may be expected to approximate to 

 the character of the Fauna of northern Europe and the North Sea, 



2nd. The south, including the whole of the south coasts of England and 

 Ireland. This division may be expected to show some indications of the 

 Famia of southern Europe. . x, , i x, .u ^ e 



3rd. The west, including the west coast of England, the south-west ot 

 Scotland, and the whole of Ireland, with the exception of the southern coast. 

 This division will be found to be of a mixed character, uniting some of the 

 characters of both the former with features peculiar to itself. 



12 



1. Doris tuberculata, Cuv. 



2, 



3. 



4. 



5. 



6. 



7. 



coccinea, For. 



flammea, A. and H. 



obvelata, John 



repanda, A. and H. 



mera, A. arid H. 



muricata, Mull. 



aspera, A. and H. 



ulidia;, Thomp 



bilamellata, Linn 



affinis, Thorn 



depressa, A. and H. 



pilosa, Gm 



similis, A. and H. 



la;vis, Linn 



sublaevis, Thorn 



quadricornis, Mont 



Maura, J^orJ 



19, Goniodoris nodosa, Mont 



20, marginata, Mont 



21, elongata, Thorn 



22, emarginata. For 



23, Polycera quadrilineata. Mull.. 



24, typica, Thorn 



25, ocellata, A. and H. 



26, cr\%ta.is., Aid 



27, citrina, Aid 



28, Thecacera pennigera, Mont. , 



29, Euplocamus claviger, Mull. . 



9, 

 10, 

 11. 

 12. 

 13. 

 14. 

 15, 

 16. 

 17, 

 18 



Tritoniad^, 



30. Tritonia Hombergii, Cuv. 



31. plebeia, Jo/«» 



32. arborescens, i^ai 



33. Meliboca fragilis, For , 



34. coi'onata, John 



35. piunatifida, Mont 



36. maculata, Mont 



37. Proctonotus mucroniferus, A. andll. 



38. Alderia amphibia, Allm 



39. Eubrancbus tricolor, For 



40. Eolis papillosa, Linn 



Zetlandica, For 



rosea, A. and H. 



obtusalis, y^. awd H. 



angulata, A. and H. 



stipata, A. and H. 



nana., A. and H. 



aurantia, A. and H. 



concinna, ^. onrf /^. 



olivacea, A. and H. 



Northunibrica, A. and H..... 



\iridis, For 



Hystrix, A. and H. 



vittata, A. and H. 



pallida, A. and H. 



FaiTani, A. and H. 



violacea, A. and H. 



foliata, For 



coerulea, Mont 



alba, A. and H. 



coronata. For 



pedata, ilfow^ 



Cuvieri, /o/m 



Urumraondi, Thorn 



curta, A. and H. 



rufibranchialis, John 



pellucida, A. and IL 



gracilis, A. and U. 



68. longiconiis, Mo»< 



69. purpurascens, i^/em 



70. plumosa, Flem 



71. miuiiaa, For 



72. despecta, /o/h> 



73. Pterochilus pulcher 



74. Calliopaja dendritica, A. and H.. 



75. .'bifida, Mont 



41, 



42, 



43, 



44. 



45, 



46. 



47, 



48. 



49. 



50, 



51, 



52. 



53, 



54, 



55, 



56. 



57. 



58, 



59, 



60. 



61, 



62. 



63. 



64. 



65. 



66. 



67. 



112 3 



In the division No. 1 (north and east) there are, — 



Doridae 16 



Tritoniadae 30 



— 46 



