EURYOTIS BRANTSII. 
by two, and the third has three ridges, and also a very irregular or deeply indented enamel 
ring behind the last. The first molar of the lower jaw with three ridges, the anterior of 
which is prolonged so as to constitute an edging to the whole of the portion of the tooth in 
front of it; the second and third with two ridges, each of which appears distinctly divided 
into two lamina i, between which there is a portion of bony matter. The incisors of both jaws 
are slightly arched, and their points cutting ; each of those of the upper jaw with a slender 
groove near its outer edge, and the point slightly emargiuate, those of the lower jaw plain, 
the points entire and nearest to the inner edges of the teeth. The molar teeth in the animals 
of this genus appears to consist of strongly compressed tubes of enamel, each inclosing a portion 
of bony matter. 
3 a A view of the upper surface of the skull of Euryotis Brantsii of the natural size. 
3 b A lateral view of the skull of do. do. 
3 c A lateral view of the lower jaw of do. do. 
3 d A front view of the incisor teeth of the upper jaw of do. do. 
3 e A front view of the incisor teeth of the lower jaw of do. do. 
3 f A view of the under surface of the skull of do. of twice the natural size. 
a. The first or anterior tooth ; b. second or middle tooth ; c. third or hind-tooth. 
3 g A view of the lower jaw of do. do. 
a. The first or anterior tooth ; b. second or middle tooth ; c. third or hind-tooth. 
The skull of this species, particularly towards its hinder extremity, is wider in proportion to 
its length than that of either of the other two, and the frontal bones between the eyes 
are broader. The length of the skull from the anterior extremities of the nasal bones to the 
hinder aspect of the occipital bone one inch five and a half lines, and its width immediately 
behind the zigomatic arches seven and a half lines. The length of the frontal bones are six 
and three quarters lines, that of the nasal bones six lines. The first molar tooth of the upper 
jaw with three transverse, slightly elevated ridges, the second with two, and the third with three, 
behind the last ridge of the latter there is a slight, somewhat circular, concavity edged by enamel 
forming the hinder portion of the crown of the tooth. The first tooth of the lower jaw with three 
transverse ridges, the anterior one continued forwards along the inner edge of the tooth after- 
wards curved, first outwards, and then inwards and backwards; the second tooth with two ridges, 
and the third with three. The incisors of both jaws slightly arched, their points cutting, and 
very slightly emarginate ; each of those of the upper jaw distinctly marked with a narrow lon- 
gitudinal groove towards its outer edgj, those of the lower jaw also grooved, the grooves so 
delicate however as only to be visible when examined with attention near to their outer edges. 
3 h The liver of Euryotis Brantsii , consisting of four irregular shaped lobes, some of 
which are slightly subdivided. 
3 i The spleen of Euryotis Brantsii, slender and three-sided. 
3 k The kidney of do. 
3 l The stomach of do. 
a. The cardiac orifice ; b. the pyloric orifice. 
3 to The cwcum, &c., of do. 
a. The small intestines ; b. the large intestines ; c. the situation of a gland the ducts of which 
open on the inner surface of the cwcum. The latter towards its apex, smooth, elsewhere with 
several row’s of cells. 
3 n The inner surface of the apical portion of the cwcum ; — a. the opening by which the 
secretion of the glands, already mentioned, is discharged. 
3 o The vagina and uterus. 
a. The vagina ; b.b. the cornua of the uterus ; c.c. the ovaria. 
