88 ALLIED TERN. 



carpus to tip eleven inches; beak two inches and nine tenths; 

 height at base seven lines; tarsus eleven lines; middle toe and 

 claw one inch and one fifth. 



We have now arrived at Temminck's last order — 

 the web-footed birds. In the fourteenth order, the 

 Pinnatipedes, which includes the lobe-footed birds, as 

 the Phalaropes and the Grebes, I have had no bird 

 to represent, inasmuch as I declined to take the Coots 

 out of the Grallatores. In fact we may, I think, 

 without any confusion drop this order altogether, and 

 include it among the Grallatores. They form, however, 

 a link between the true waders and the swimmers. 

 Yarrell placed the Grebes among the Natatores, an 

 order not comprised in Temminck's system; Bonaparte 

 placed them with the Divers at the end of the list, 

 after the Puffins; while Schlegel makes the Grebes 

 and Divers the two first groups of his water-birds. 



It would perhaps have been better to have placed 

 the Colymhid(B the first genus in the class Pahnijiedes, 

 inasmuch as they are entirely web-footed, and they 

 would not then have been separated so far from the 

 PodicipidcB, with which they have strong affinities. I 

 will not, however, create confusion by deviating any 

 further from a system which, taking it altogether, is 

 the simplest and most natural ever presented to the 

 ornithological student. 



The Allied Tern, so called by reason of its afiinities 

 with the Sandwich Tern, was introduced into the 

 European list by Temminck, and has been admitted 

 as an European species by Bonaparte, Schlegel, and 

 Degland. 



Temminck informs us that it occurs in the Grecian 

 Archipelago, on the Bosphorus, and the borders of 

 the Danube. Degland adds to these localities the 



