The existing genera include Anas, Aquila, Bubo, Columba, Cypselus, Lanius, Picus, Phalacrocorax, Sula, &c. Very interesting is the fact that Serpentarius, Psittacus and Trogon are amongst this list of birds, which are now restricted to the tropics.
" Perroquets " - Psittacus, Linn.
The unlookedfor discovery in France of remains which he has referred to, forms now existing it is true, but existing only in countries far removed from Europe, forms such as Collocalia, Leptosomus, Psittacus, Serpentarius and Trogon, is perhaps even more suggestive than the finding that France was once inhabited by forms that are wholly extinct, of which in the older formations there is abundance.
Cc.), and are said by him to show the greatest resemblance to the common Grey Parrot of Africa, Psittacus erithacus, through having also some affinity to the Ring-necked Parakeet of the same country, Palaeornis torquatus.