202 Dr. Leach on the new Arctic Animals [Sept. 



I am sorry that the skeleton (which would, in all probability, 

 have furnished a good specific distinction), was not brought 



home. 



Class Aves (Birds). 



Genus Uria, of authors (Guilemot). 



Species Francsii. Rostro breviusculo crasso : mandibula 

 superiore subarcuata apice abrupte acuminate 



Color albus : Dorsum perfusco-nigram : Alee pallide nigri- 

 cantes : Gula fuscesente-brunnea : Rostrum nigrum ; mandibula 

 inferior ad angulum inferiorem striga albida : Pixies nigri. 



I first received this species from F. Franks, Esq. who took it 

 off Ferro'e, and named it after him, exhibiting a specimen of the 

 bird, under the name U. Francsii, together with one of Uria 

 Troile and drawings of both species, to the Linnaean Society in 

 December. A notice of this bird, under the name of U. Francsii, 

 is published in Thomson's Annals of Philosophy for January 

 last ; it has since been republished in the first edition of Capt. 

 Ross's voyage. It was sent home by all the ships employed in 

 the northernexpedition, under the name Troile ; and it was even 

 received as such, and believed to be no other, by the collectors 

 of birds in this country. I was the first who perceived the 

 distinction, and that too without comparison, and I instantly 

 endeavoured to convince those who entertained doubts on the 

 subject. Notwithstanding this, Capt. Sabine who sent it home 

 to his brother J . Sabine, Esq. as the Troile, and who first learned 

 from me that it was a distinct species, has, without any refer- 

 ence whatever to what I had told him, proposed to name it after 

 an ornithologist, who was ignorant enough to describe it under 

 the name of Troile, and to give the true Troile (one of the most 

 common and best known of the European birds) under a new 



name ! 



Type MOLLUSCA. 



Class Pteropoda. 



Genus Clio (Pallas). 



Species Borealis. 



This species occurred in great profusion in Baffin's Bay. 



Genus Limacina (Cuvier). 



Species Arctica. — Argonauta Arctica, 0. Fabricii. 

 This likewise occurred in" enormous quantities, but not one 

 specimen reached England with its shell entire. 



Class Gasteropoda. 



Genus Margarita (Leach). 



Char. Testa anfractibus subinflatis; Spira tenuiter elevata : 

 Apertura rotundata tenuis, interne imperfecta : Umbilicus per- 

 fectus profundus : Operculum rotundatum, nucleo centrali. 



