Of the 273 species, at least 170 were new to the fauna of the district. Among those recorded in the work before-mentioned are 30, generally of a more southern type, which I did not succeed in procuring. The whole number is composed of Only two or three of them are found in North America, viz.: Saxicava arctica, Lucina flexuosa, Lamellaria perspicua ? The Canary species, common to Scandinavia are— The proportion of Canary species found in the British seas is Acephala lamellibranchiata......... 49 in 84, or 58 per cent. The Canaries have, in common with the north of Spain, Acephala lamellibranchiata............... 36 in 84, or 43 per cent. The following species inhabit the Canaries and the Mediterranean, or south coast of Spain and Portugal. The proportion which these bear to the Canary species is- The Canary species which have not been found in the south of Europe or Mediterranean are generally of more southern type, and such of them as are not already known inhabitants of Western Tropical Africa, will probably prove to be so. Of these, the species of Pedipes is found in Fayal, Littorina Striata and Mitra fusca in Madeira and the Azores, Modiola (unnamed), Pecten corallinoides, Patella crenata, P.guttata, P. Lowei, P. Candei, Monodonta Bertheloti, a Solarium, Scalaria cochlea, Eulima? (new), Natica porcellana, and another Natica, a new Cancellaria Mitra zebrina, and another Mitra, Cypræa candidula? Marginella guancha, and an undescribed Cylichna extend to Madeira. Neritina viridis, and Columbella cribraria are common to the Canary, Madeira, and West India Islands. The marine fauna of the Canary Islands is characterized by the presence of numerous species of Scalaria, and by the absence of all representatives of the genera Nucula, Leda, and Anomia. MADEIRA. During a few days spent in the Madeira Islands I obtained 156 species of marine testaceous Mollusca. |