24 
ZOOLOGICAL LITERATURE. 
process of the first rib, and in the development of the fifteenth rib. — Prof, 
van Beneden reports on an example cast ashore in the Schelde (May 1869) ; 
the skeleton was preserved. Bull. Ac. Belg. 1869, xxvii. pp. 680-682. 
Hr. Malm describes a skeleton of Bakenoptera musculus from Finmarken 
in the Stockholm Museum. QEfvers. Vet. Ak. Fdrhandl. 1868, pp. 95-103, 
with a plate. 
Physeter, N. L. Atwood records the captures of lean Sperm-Whales, in 
the intestines of which ambergris was found. Americ. Natur. ii. 1869, 
p. 14.-4-On malformation of a tooth, Murie, Proc. Odontol. Soc. Great Brit. 
1869, p. 47. 
Marsupialia. 
'^Didelphys. Dr, v. Frantzius has observed in Costa Rica D. aurita, qtdca, 
myosurus, and murina. Wiegm. Arch. 1869, pp. 316-318. 
Halmaturus. Dr. Lucae mentions another case in confirmation of liis 
former observations on the female genital organs [see Zool. Record, iv. p. 41]. 
Zool. Garten, 1869, p. 61. 
Phalangista vulpina, Marno describes the young bred in the menagerie at 
Vienna. Zool. Gart. 1869, p. 62. 
