170 DR. J. E. GRAY ON THE BONNET OF THE WHALE. [Apr. 26, 
ciliis et dorso medio cum remigum et rectricum marginibus 
rufescenti-isabellinis: dorso medio nigro striato : gutture medio 
cum cervice nigris ; macula suboculari et gutturis vitta utrinque 
laterali albis: macula cervicali utrinque flava: ventre albo, 
crisso rufescente : rostro superiore plumbeo, inferiore cum pedi- 
bus flavis. 
Long. tota 3°8, alee 2°3, caudz 1°8 poll. Angl. 
(2.) Caprimuteus TAmaricis, Tristram. 
Cinerascenti-isabellinus, nigro minute vermiculatus: fascia col- 
lari postica et maculis humeralibus rufescenti-isabellinis : mento 
et fascia gulari albis : alarum primariis nigris, vitta lata alba; 
secundariis rufis, nigro transfasciatis: alis intus et tectricibus 
subalaribus pallide rufis: caude rectricibus duabus utrinque 
externis pallide rufis, nigro frequenter et irregulariter trans- 
fasciatis, apicibus late albis ; ceteris dorso concoloribus. 
Long. tota 90, alee 5°6, caudze 4°2. 
The following papers were read :— 
1. Notre on THE Bonnet or THE RiGHT WHALE. 
By Dr. J. E. Gray, F.R.S., F.L.S. 
Mr. Holdsworth has presented to the British Museum a specimen 
which had been received from an American whaler, as “the Bonnet 
of Balena mysticetus, obtained at the Sandwich Islands.” 
I have shown the specimen to Professor Owen. He states that a 
similar specimen is in the Museum of the College of Surgeons, and 
that he considers it as ‘‘a diseased action or tumour of the outer 
layers of integument.” 
The specimen is oblong, 11 inches long, and 8 inches wide, very 
irregular in the outline, with a very rough pitted surface, four of the 
pits being much larger than the rest, and dividing the surface into 
six prominences. The whole substance seems to be formed of irregular 
horny layers placed one under the other, the lowest layer being the 
one last formed, and each of these layers is more or less crumpled and 
plicated on the surface, giving the irregular appearance to the mass. 
