194 Proceedings of the Royal Physical Society. 
the Azores, the Cape of Good Hope, Japan, the North 
American seaboard, and even New Zealand. Mr F. W. True 
states that in the national collection at Washington, U.S., 
there are four adult skeletons, ten skulls, and some casts of 
heads and animals. All the specimens were from Cape Cod, 
Massachusetts, where they were obtained in the fall of 1875." 
Heilprin also describes? the stranding of a more recent 
specimen on the North American coast. The grampus 
preserved in the museum at Wellington, New Zealand, by 
the name of Grampus richardsoni, is probably Grampus 
griseus. 
The periods of the year in which specimens have been 
taken have been very variable. This dolphin has been 
captured at Algiers in January, at Nice in June, at Palermo 
in July, on the coast of the Gironde in April and July, off 
La Vendée in June, at Concarneau, Brittany, in September, 
in the Bay of St Michel in August, on the coast of 
Holstein and off the Eddystone Lighthouse in February, 
and at Sidlesham, on the coast of Sussex, in July, whilst the 
specimens from Shetland recorded in this communication 
were not taken until September. Nothing definite, therefore, 
can be said as to the migrations of this dolphin. It is, 
however, interesting to note that the Shetland capture was 
not that of a solitary animal, but of a school which had 
wandered northward, probably in the track of the Gulf 
Stream. 
The dentition of this dolphin has always been a noticeable 
character. No teeth have ever been seen projecting through 
the gum in the upper jaw, and the number visible in the 
mandible has varied from two to six on each side. In the 
re and 
Shetland skulls two possessed the dental formula 
0—O0 
33" which seem to be the most usual 
four the formula 
number. 
1 See Bulletin of the United States National Museum, No. 36; the family 
Delphinide, by F. W. True. Publications of Smithsonian Institution, 
Washington, 1889; also Professor Cope in Proc. Phil. Acad., 1876, pl. iii. 
2 Proc. Phil Acad., 1887, p. 49. 
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