145 
ADDITIONS. 
Page 71, ZipHius SowERBIENSIS, add— 
a. Cast of skull. Presented by Dr. Acland. 
_ Cast from Mr. Sowerby’s specimen in the Anatomical Museum, 
Page 126, DELPHINUS MicROPS, ati 
_ 6. Skull, larger; the skull behind the frontal longer, slightly 
compressed ; teeth 23 on each side; length, entire, 18’; tooth- 
ine 103, beak 12, lower jaw 153; width at orbit 67, at notch 3, 
m iddle of beak 13. 
This skull chiefly differs from the type skull of D. microps in 
the back of the skull bemg much less convex, and in its being of 
_ arather larger size: can this depend on the sex of the specimen? 
s 
