336 Proceedings of the British Association for 1S50. 



each separately abstracted ; the year and place of observa- 

 tioD, the distance from shore, the depth, the ground, the 

 number of species of univalve testacea taken alive, and of 

 those taken only dead ; the same as regards bivalves. The 

 number of species of Echinodermata, and remarks under 

 which the creatures taken most abundantly in each instance 

 are recorded. More than a hundred papers, all relating to the 

 district under report, are so abstracted. In these tables the 

 region so explored is divided into ten provinces, five upon 

 the English coasts and five on those of Scotland. These 

 provinces are not arbitrary sections, but represent areas, 

 each presenting peculiar geological features. The five 

 English provinces are : — 1. The coasts of Dorset and Hants, 

 a region peopled from the general Fauna of the English 

 Channel, but deficient in many of the species w^hich give a 

 character to the second province, the coasts of Devon and 

 Cornwall, where we have the most southern type of the Fauna 

 of Great Britain, and the greatest number of Lusitaniau 

 forms appearing. 3. The Bristol Channel and Southern 

 shores of Wales, where we have a southern character still 

 presented by the Fauna, but less intense. 4. The coast of 

 North Wales, where we have the characteristic Fauna of the 

 Irish Sea, marked more by deficiencies than by many pecu- 

 liar species. 5. The seas around the Isle of Man, where 

 the northern and southern types of the British marine Fauna, 

 each faintly indicated, meet as it were in the middle of a 

 region markedly of the British or Celtic type. 6. The region 

 of the Clyde, and the lochs which branch from it, an area of 

 great interest, for in these great sea-lakes we find as it were 

 imprisoned assemblages of marine creatures which remind 

 us of the inhabitants of the Arctic Seas, and strikingly of the 

 population of the British Seas during the glacial epoch. 7. 

 The seas of the inner Hebrides, presenting similar pheno- 

 mena, but influenced by the currents of the North Atlantic. 

 8. The seas of the outer Hebrides and the district around 

 Cape Wrath. 9. The Orkneys, where the peculiarities of 

 the northern part of the German Ocean come in contact with 

 those of the Atlantic regions ; and 10. The Shetland Isles 

 where we find the marine races of^ Britain mingled abund- 



