4 The Scottish Naturalist. 



The number of teeth in the upper jaws was 23 on each side, 

 and in the lower jaws 24 and 25 ; but some of them were barely 

 through the gum, one or two at the front being mere denticles. 

 They were sharp, conical, and curved inwards, and had a slight 

 longitudinal groove on their anterior and posterior surfaces. 

 They seemed to be quite free and movable. The lower jaw 

 projected slightly beyond the upper. 



Owing to insufficient facilities for maceration, a few of the 

 teeth were lost ; and, for a like reason, I have been unable with 

 certainty to note the number of vertebrae, some of the smaller 

 being merely cartilage. Previous to maceration, I had counted 

 90 vertebras. The first two cervical vertebrae are anchylosed, 

 the remainder free. 



I have not any doubt that this individual is a young Delfihimis 

 albirostris, or, more properly, Lagenorhynchits atbirostris, Gray. 



I may remark that the figure given by Brightwell, and copied 

 by Bell in his ' British Quadrupeds,' is very far from correct, 

 that of Mr Clark, as I have already said, approaching nearer to 

 this one. 



Some interesting anatomical peculiarities have been noted by 

 Mr Clark and Drs Cunningham and Murie in their respective 

 papers. 



NOTES ON THE BIRDS OF THE BASIN OP THE TAY 

 AND ITS TRIBUTARIES. 



By Colonel H. M. DRUMMOND HAY, C.M.Z.S., B.O.U., &c. 



{Continued from Vol. V., p. 346.) 



139. Sula bassana, Briss. (Solan Goose or Gannet.) 



So near the Tay as the Bass Rock stands (five-and-twenty to 

 thirty miles), computed to contain from ten to twenty thousand 

 breeding-birds of this species alone, the mouth of the Tay is 

 naturally a great resort, where from early spring to late in autumn 

 the Solan Goose may constantly be seen, either in twos or threes, 

 heavily winging their way close to the water, bent perhaps on 

 some distant fishing excursion ; or, in considerable numbers, high 

 up in the air, plunging and dashing into the sea in pursuit of small 

 fish, which congregate about the estuary, — ascending the river, 

 according to Mr Nelson, even as high up as the Dundee Bridge 



