Zoological Society. 127 



B. 



19. T. Stutchburyi, Blainvillc. 

 T. campanulata, Deshayes in Brit. Mus. 



20. T. minima, Blainvillc. 



T. bipalmata and bipalmulata, Delle Chiajc. 



T. palmulata, Philippi. 



T. Philippii, Fischer. 



T. serratus, Deshayes, MS. 



This species is common in the Mediterranean ; but it has not 

 yet been noticed in this country. 



21. T. palmulata, Lamarck. 



T. bipalmulata, ej. 



Taret de Pondicheri, Adanson. 



Nothing is known of the valves or tube. The pallets, from 

 which Lamarck described the species, are still preserved in the 

 Collections of Natural History at the Jardin des Plantes ; and I 

 observed another pair in the cabinet of M. Petit de la Saussaye 

 at Paris. They bear no resemblance to the pallets of T. palmu- 

 lata of Philippi, except in being compound or jointed; but they 

 are more nearly allied to the pallets of T. bipennata, although 

 evidently distinct. 



PROCEEDINGS OF LEARNED SOCIETIES. 



ZOOLOGICAL SOCIETY. 



February 14, I860.— John Gould, Esq., F.R.S., V.P., in the Chair. 



On the Occurrence of American Birds in Europe. 

 By Herr H. Gatke of Heligoland. 



The rcute by which American birds proceed to Europe is, as 

 Yarrell justly terms it, "an interesting problem, of difficult solu- 

 tion." For years this solution has occtipied my attention; and 

 although I have myself always been convinced that such of these 

 entirely American birds as occasionally visit Europe do reach us by 

 a passage across the Atlantic, this remains a mere opinion, carrying 

 no weight if unsupported by facts, or by at least sufficient argument 

 to make good the question at issue. 



The mere comparative review of the occasional visitors among the 

 birds of Great Britain and of Germany will lead to the conclusion 

 that the route of American birds to Europe must needs be a voyage 

 across the Atlantic ; for almost all the additions to the birds of 

 Europe, of species purely American, have been obtained in Great 

 Britain — which could not have been the case if they had proceeded 

 in any other than an eastern direction — whilst the additions by Ger- 

 many, furnished to the European Ornis, consist almost entirely of 

 birds belonging to Asia. 



