114 B. G. Wiider on a fetal Manatee and Cetacean. 
i Rondeletius : * Piscibus. 1554; folio, libr. xvi, 
8. Agassiz, Louis: Essay on clas sification London, “si, pe pp. 381. 
9. perm Eola: Remarks upon Manatus. . Boston Soc. Nat. Hist., iii, 
10. De Blainville: Prodrome d'une classification. Bulletin de la Soc. Philo- 
a veh Richard On the Anatomy of the Dugong. Proc. Zoél. Soc. Lon- 
mer a Oe Ba Richard: Comparative anatomy of vertebrates. London, 8vo, 3 vols. 
ee Narey, T. H.: Anatomy oi vertebrated animals. London and New York, 
Heckel, Ernst: Natiirliche a hichte 
. is. had J. E.; Catalogue of seals and whales in the British Museum. Lon- 
on, 1866. 
16. Caine : Recherches sur le systéme vase. sang. de |’ Hippopotamus. 
Compas Rendus, 1860, 524-528. Also Ann. des sciences nat., xxii, 376-379. 
Aa Charl the classification of mammalia. Proc. Am. Assoc. for 
Adv. of a 1851. mB 6 
Agassiz rence between Sirenidae and true Cetacea, and the 
uta ¢ characters of ey former. Proc. Am. Assoc. for Adv. Science, 1849. 
438, (By title nly.) 
= Agenis: Ts zoological character of young mammalia. Proc. Am. Assoc. 
for Ady of Science, 1849, 85~90. 
0. Dana, J. D.: Manual of ok. — 
tesa 5D Oe ce classification of animals based on the principle of 
ization. No. III. Cision of Herbivores. Am. Journal of Science, 
J5T- 
22. Daubenton Bastiey saniane tes de Buffon, avec les doer anatomiques 
de Daubenton, Mammiféres, texte, cig pret 2s: piawietien, mm , ol 402, fig. 
. Gill, Theodore: Arran, of m als. Smithsonian 
’ Fifth edition, 187 
26. Hye tt, Alphi rissa domestication. 2 ae 1808, mit ed. 
» tye lpheus: Fossil Copbulpeds of the Museum of Comparative 
Embryology. Bull. of the M. C. S., iii, No. acs aa 
EXPLANATION OF FIGURES.* 
Fig. 1. oo nag male Manatee, 7; of natural length. Reduced copy of 
urie’s figure. The eye and ear appear as black spots; a, anus; 1, M, A, the 
ae of —, index, medius, and annularis digits. 
Fig. 2.—Foetal Manatee, natural size. n, nostril; a, ancon (elbow); ¢, carpus. 
Fig. 3.— Needot tend Wteaciee once two diameters; the muzzle being raised 
a little so as to expose the lower lip. The dotted line indicates the extent of 
i The external meatus black spot. 
7.—Head of foetal cetacean, natural size, from above; n, nostril. 
The figures, exceptin; tf drawn from nature and from photographs, 
sieacetea ake Philip Barua. As 
