Mr. E. R. Lankester on new Mammalia from the Red Crag. 358 
b. The dorsal fin two-thirds of the entire length of the animal from the 
nose. Cervical vertebre sometimes anchylosed. Neural canal tri- 
gonal, broader than high. Ribs 11. 
5. BaL@zNOPTERA. 
The second cervical vertebra with a broad, long lateral pro- 
cess, perforated at the base. The first rib single-headed. ‘The 
lower jawbone moderate, with a distinct, high, conical coronoid 
process, Vertebre 50. Ribs 1]. Arm-bones slender. 
Balenoptera rostrata. (The Little Beaked Whale.) 
Hab. Common at the mouths of large rivers. 
The “ Finner Whales” are mentioned as inhabiting almost all 
the seas ; and doubtless there are a large number of species that 
have not yet been brought under the notice of zoologists, or of 
which there are no remains in any Huropean museum. 
XXXIX.—On New Mammalia from the Red Crag. 
By EH. Ray Lanxester. 
[Plate VIII. | 
Durine a recent visit to Suffolk I had the pleasure of examining 
a very fine collection of Crag fossils in the possession of W. 
Whincopp, Esq., of Woodbridge, perhaps one of the most re- 
markable and interesting collections ever formed from a single 
deposit, containing as it does remains derived from every stratum 
from the Greensand upwards, and illustrating in a very striking 
manner the fallacy of hasty generalizations founded upon the 
more or less extended distribution of genera or species through 
any given series of deposits. Though I would by no means wish 
to impugn the doctrine of strata identified by their organic con- 
tents, yet I feel confident that too great caution cannot be exer- 
cised in drawing conclusions from the phenomena of association 
‘when contemporaneity is not demonstrable. In the Red Crag 
we have derivatives and representatives of nine different faune, 
to some one of which it becomes necessary to refer any new or 
undescribed fossil that may be discovered therein. There are— 
(1) Upper Greensand fossils in considerable numbers, portions 
of Ammonites, Terebratule, Saurian teeth and bones, &c. 
(2) Chalk fossils, represented by flints containing Sponges and 
Echinoderms. (3) Fossils from the lowest Eocene beds, the 
Thanet Sands. (4) Nodules, the so-called “coprolites,” and 
very numerous remains of Fish, Crustacea, and (much more 
rarely) Reptilia and Mammalia, derived from the London Clay, 
(5) Teeth of Carcharodon heterodon and portions of Hdaphodon, 
Ann. & Mag. N. Hist. Ser.3. Vol. xiv. 23 
