114 THE SCOTTISH NATURALIST 



BORBORID^E. 



461. Borborus (Olina) geniculates, Macq., Loch Assynt, 3rd 



June 191 1. 



462. B. nitidus, Mg., Loch Assynt, 7th June 191 1. 



463. B. nigrifemoratus, Macq., Lochinver, 23rd June 191 1. 



464. Limosina vitripennis, Zett, Loch Assynt, 26th July 1911. 



{To be continued.) 



NOTES. 



White sided Dolphin in the Dornoch Firth. At the 



beginning of September 19 11, Miss E. V. Baxter mentioned to me 

 that she had seen the carcase of a small Cetacean on the south 

 shore of the Dornoch Firth, about three miles east of Tain, Ross- 

 shire. On the chance of its being one of the rarer species, I expressed 

 a wish to see its head, and this I received a fortnight later from 

 Miss A. C. Jackson, who, on being applied to, kindly took the trouble 

 to secure it for me. When it reached me, the head was in an 

 advanced state of decomposition; and after a very superficial 

 examination it was deposited in a corner of the garden, there to 

 skeletonise. I had little doubt the species was Delphi n us (Lage/io- 

 rhynchus) acutus, Gray, known as the White-sided Dolphin, and careful 

 comparison of the skull a few weeks ago with Sir William Turner's 

 description and figure of that of a specimen from near Dunrobin Castle, 

 Sutherland, in April 1906 {Proc. Roy. Soc. Edin., xxvi., pp. 310-319) 

 bore out this identification. Sir William Turner has since kindly 

 examined the Dornoch skull, and agrees with me in regarding it as 

 Delphinus acutus. Unfortunately I am unable to give any details of 

 the external features of the animal. It was described in general 

 terms as "dark above, lighter below," and from the information given 

 me, I conclude its length was roughly about 7 feet. The 

 following are the principal measurements of the skull : 



Length in a straight line from occipital condyle to tip of beak, 



16J inches. 

 Length of beak from notch in maxillary bone to tip of pre- 



maxillaries, Sh inches. 

 Length of lower jaw, 13I inches. 

 Greatest breadth of skull, 8f inches. 

 Breadth of beak at base, 4 inches. 



These measurements have been checked by Mr E. J. Henderson, 



