TRANSACTIONS OF SECTION D. 503 
Beluga is greater. There may be an approximation in the older individuals, as 
happens in some other groups. 
A large cetacean was shot in the Bay some weeks ago.' It evidently belonged 
to the porpoise kind or was a close ally to this genus. It measured 12 feet, and had 
pointed broadish fins, black above, white below, and was a male. Head 20 inches 
long, 103 inches broad, 9} inches high. The teeth were wanting at the middle 
of the upper and lower jaws of the left side. There are, however, seventy-three 
in all remaining. The original number seems to have been a hundred (all sides). 
The back lower teeth of left side have been unevenly worn owing to the unequal 
pressure of the teeth above; several teeth are loose. The csophagus is about 
6 inches across, and glandular, The stomach had a capacity of 20 litres. The 
first stomach is very large, the second rounder and smaller. It may be said that 
the teeth are much ground down. There is a duodenal ampulla at some distance 
from the stomach. The intestine was 160 feet long, indicating that the absorp- 
tion was somewhat slow. The stomach contained the remains of several fish, 
and some fragments of crustaceans carried by the victims possibly. The denti- 
tion of some of the Galway cetaceans is as follows :— 
No. of Teeth No. of Teeth 
in Upper Jaw in Lower Jaw 
Right Left Right Left 
Dolphins cooaerse cient youll od. \fer ib 44 44 43 
Grampus griseus. : ct ert 0 5 4 
Globiocephalus Melas (Pilot) . it OQ 10 7 8 
Beluga (White fish) E : breed) 9 6 7 
Orca (half of upper jaw). : > te? 9 — — 
Mesoplodon (Cuvier’s) . : Eioexe 0 1 1 
Tursiops ‘ : ; ; . 24 24 24 24 
MONDAY, SEPTEMBER 9. 
Jowmt Discussion with Section I on the Physiology of Aquatic 
Organisms.—See p. 654. 
The following Papers were then read :— 
1. Some Features in Bird-migralion as observed during Hight Weeks’ 
Residence at the Tuskar Light-station, Co. Wearford. By C. J. 
Parten, M.A., M.D., Sc.D. 
In such a comprehensive study as the migration of birds as carried out per- 
sonally, over a considerable period of time, at an isolated rock on which a light- 
house has been built, with a lantern of powerful illumination, so many problems 
present themselves for investigation, and so extensive and intricate are the 
statistics, that in order to cover the ground at my disposal I must here confine 
my remarks to some special features in connection with my subject which I hope 
will be of general interest. To the ornithologist of a country, and especially in 
the case of a small one like Ireland, where a complete knowledge of the avi- 
fauna is not so difficult to acquire, one of the most fascinating objects is to wait 
and watch for species which, either unknown or of very rare occurrence in their 
natural habitat, are attracted and decoyed by the luminous beams of the lantern 
under certain meteorological phases, when on passage. It is chiefly from the 
lighthouse that so many birds new to.Ireland have been recorded, and during 
my visit I was enabled to add a few more to the list. Another feature of 
1 One specimen labelled Delphinus tursio (Fabr.) in the Copenhagen Museum 
is like this in skull and backbone. Two others labelled Delphinus tursio (Fabr.) 
and Delphinus tursio (Cuvy.) have sharp teeth and are smaller, 
* Absent. 
