151 



land by Mr. VVilliam Lord, and presented by liim to tlie Society, vvere 

 exhibited. The most \vorthy of particular notice were aspecimen of the 

 long-tailed Duck, Anas glacialis, Linn., in its summer plumage ; and 

 an example of the brovon-headed Guli, Larus capistratus, Temm. As 

 this Guli has veceived but little notice as a British bird, Mr. Yarrell 

 added the following description of the specimen, also in its summer 

 plumage. 



"This bird is atonce distinguished from Larus at7icilla,h\nn. , and 

 Larus ridibundus, Leisi., (both also British GuUs, and \vith both of 

 which it has been confounded,) by its more slender as well as shorter 

 beak, shorter tarsi, and smaller feet. The vvhole length of this speci- 

 men from the point of the beak to the end of the tail feathers is 15 

 inches; from the point of the beak to the first feathers. 1 inch and 

 half a line ; from the point of the beak to the rietus, ] inch 10 lines; 

 from the carpus to the end of the first primary (which is the longest), 

 11 inches 8 lines ; length of the tarsus 1 inch 7 lines j of the middle 

 toe and nail 1 inch 6 lines. The beak brownish red ; the head and 

 upper part of the neck brocoli-brovvn, bounded by blackish bro\vn, 

 descending lovvest at the fore part, some of the davk feathers at the 

 margin in front tipped with vvhite ; the remaining portion of the neck, 

 the breast, abdomen, vent and tail, pure white; upper surface of the 

 wings pale ash-gray, under surface grayish vvhite ; primaries vvhite, 

 edged and tipped vvith black, broadest on the inner web, shafts vvhite ; 

 legs and toes brovvnish red, webs of the feet chocolate-brovvn. 



" Inhabits the Shetland and Orkney islands." 



At the reąuest of the Chairman, Mr. Gould exhibited about thirty 

 recent specimens of the Stormy Petrei, Thalassidroma pelagica, Vig., 

 received by him from the eastern coast of England; and a recent spe- 

 cimen of the Pomarhine Guli, Lestris Pomarhinus, Temm., obtained 

 from the šame locality. A living pair of the latter bird have since 

 been added to the Society's Menagerie by the kindness of James 

 Cornish, Esq. who obtained them on the coast of Devonshire. 



The following Notės by Mr. Owen, taken at the dissection of tvvo 

 Seals{Plioca vilulina, Linn.), vvhich died at the Society's Gardens, 

 were read. 



" Ali the parts bore the deep venous tint vvhich appears to be pe- 

 culiar to those Mammalia whose aąuatic habits tend to impede their 

 respiration. The cellular textine vvas e.\tremely tough, vvith a gra- 

 nular appearance, somevvhat resembling the structure of the corpus 

 cavernosum: it is the šame in the Porpoise. It was also gorged vvith 

 bloody serum, a great quantity of vvhich vvas contained in the cavity 

 of the abdomen. The omentum was very thin and vvithout fat, (of 

 which indeed there vvas a deficiency over the vvhole body): it extended 

 over half the contents of the abdomen. 



" The stomach vvas situated in the left hypochondrium : its pyloric 

 end vvas bent acutely upon the cardiac : the cesophagus entered at the 

 left extremity, leaving no saccus ccecus beyond it. The pyloric aper- 

 ture vvas extremely small as compared vvith the size of the stomach ; 



