LAGENORHYNCHUS. 



129 



formula CyD^gLCdgg = 80. Teeth small, acute, ^ ^ . 



Length of skull 15 inches, breadth of skull 7 "6 inches ; 

 length of beak 7"5 inches, breadth at base of beak 

 3"8 inches. Length of mandible 12 inches, of symphysis 

 IJ inch. Premaxillfe at first flattened then concave 

 in front of nares, almost flat in the beak itself. 

 Superior maxilla distinct on each side of premaxilla. 

 Nasals thickened at summit and on same plane as 

 vertex cranii. Pterygoids relatively large, meeting 

 mesially. Palate bone narrow in front of pterygoid ; 

 vomer distinct in middle and anterior part of hard 

 palate ; no lateral longitudinal groove on palate. 

 Described by Sir Wm. Turner in Proc. Roy. Soc. 

 Edin., vol. xxvi., 1906. See flgure below. 

 Coast of Sutherland. 



Donor — The Duke of Sutherland, 

 through the Rev. Dr Joass, Golspie. 



2. Skull, witli mandible, top imperfect, not adult. Length 



15 inches, breadth 8 inches; beak, length 7^ inches, 



breadth at base 3| inches. Premaxillae flattened in 



front of nares, then slightly concave, and further 



forward slightly convex. Pterygoids relatively large, 



meeting mesially. The characters closely correspond 



with the skull of No. 1, so that it is regarded as 



L. (iciitus. Mandible, length 12^ inches, height 2| 



inches; symphysis, length Ih inch. Teeth small, 



29 29 

 acute, ^ '^. Left tympano-periotic in sitn. No 



31 31 



9 



