MAMMALIA. 
52 Mamm. 
^ Manatus inunguis. Natterer’s full notes and anatomical descriptions of 
this form published ; A. von Pelzeln, Yerh. z.-b. Wien, xxxiii. p. 88. 
Manatus americanus. On traces of vertebral epiphyses; P. Albrecht, 
Bull. Mus. Belg. ii. p. 35. pi. ii. 
Rhytinid^, 
Rhytina gigas. On remains found in the Commander Islands; L. 
Stejneger, P. U. S. Nat. Mus. vi. p. 78. The author fully works out the 
sexual differences observed by himself and Dr. Dybowski in the skulls 
of this species. Iu the males the breadth is considerably more than half 
the length ; in the females it is just about or less than half. Measure- 
ments of five mhle and three female crania and five male and five female 
mandibles, are given. R. gigas , and not R. stelleri ) is the correct name for 
this animal. (See also B. Dybowski, P. Z. S. 1883, p. 72.) 
Genera incertj: sedis. 
Dioplotherium manigaulti , g. & sp.nn. (foss.), E. D.Cope, P. Ac. Philad. 
1883, p. 52, Miocene of South Carolina. Had two upper incisors, and is 
thus a step towards the unspecialized ancestors of the Sirenia. 
Chronozoon australe , g. & sp. nn. (foss.), C. W. De Yis, P. Linn. Soc. 
N. S. W. viii. p. 392, pi. xvii., from the Darling Downs, New South 
Wales. Believed to be related to the recent Sirenians. 
CETACEA. 
^Brown, J. T. Some Notes on Whales. Bull. U. S. Fish Comm. iii. 
p. 411. 
The habits of the Cetacea of the Massachusetts coast are noted. 
-^Flower, W. H. On Whales, Past and Present, and their Probable 
Origins. P. R. Inst. x. p. 3G0. 
A popular lecture on the relations and affinities of the Cetacea. 
^Malm, A. W. Skelettdelar af hval, insamlade under expeditioneu med 
Yega 1878-1880. Bihang Sv. Ak. Handl. viii. No. 4, pp. 1-114. 
On the Cetacean bones obtained during the Yega Expedition. Bones 
of Beluga catodon , Racldanectes glaucus, Balcena mysticetus (“ forma 
pitlekajensis,” Malm), Orca eschrichti (“ forma beringensis,” Malm), and 
Berardius vegce, sp. n., are described and figured. 
On the structure of the caudal fins of Cetacea ; see Roux, W., supra. 
BALJINJDiE. 
Beauregard, H. Recherches sur l’encdphale des Baloenides. J. de 
l’Anat. Phys. xix. pp. 481-516, pis. xxvi.-xxxi. 
^ Tullrerg, T. Bau und Entwicklung der Barten bei Balccnoptera 
sibbaldi. N. Act. Ups. (3) xi. Fasc. 2, Art. iii. pp. 36, pis. i.-vii. 
An important memoir on the structure and development of whalebone, 
