20 Mamm. 
MAMMALIA. 
Piana, G. P. [See Bovidce.] 
Pietremont, C. A. [See Equidce.'] 
Poltakoff, — . [See Muridce.'] 
Prjevalsky, N. [Third Journey to Thibet.] St. Petersburg : 1883, 4to. 
Contains a chapter on the Mammals observed. Three are new. [See 
Cams ckloni ( Canidce ), Ursus lagomyiarius ( Ursidon ), and Poephagus 
mutus ( Bovidce), spp. nn.] 
Poulton, E. B. On Heredity in Cats with an Abnormal Number of 
Toes. Nature, xxix. p. 20 ; abstract in Rep. Brit. Ass. 1883, p. 543. 
The author gives statistics as to the transmission of abnormal num- 
bers of toes from generation to generation. 
. The Tongue of Perameles nasuta , with some suggestions as to the 
origin of Taste Bulbs. Q. J. Micr. Sci. xxiii. pp. G9-86, pi. i. 
. [See also Marsupialia.'] 
Ramsay, E. P. [See Hapalotis papuanus (Muridce), Dendrolagus doria- 
nus ( Macropodidce ), spp. nn.] 
Ranvier, L. De l’existence et de la distribution de l’eleidine dans la 
muquese bucco-oesopliagioune des Mammif6res. C. R. xcvii. p. 1377. 
Regnard, P., & Blanchard, R. Etude sur la capacity respiratoire du 
sang des animaux plongeurs, sa comparaison avec la capacitd respi- 
ratoire du sang des autres animaux. Bull. Soc. Zool. 1883, p. 136. 
The authors find that in diving Mammals, such as the seals, there is 
a much greater proportion of haemoglobin in the blood, by which they 
are enabled to store up a greater supply of oxygen. 
Reiciienow, A. Mammalia in Arch. f. Nat. for 1882, xlix. part v. 
pp. 385-426. Berlin : 1883. 
Rein, G. Beitrage zur Keuntuiss der Reifungserscheinungen und 
Befruchtungsvorgange am Saugethiere. Arch. mikr. Anat. xxii. 
pp. 233-270, pi. ix. 
The author describes the processes of growth and maturation of the 
ova in rabbits and guinea-pigs. [See also C. S. Minot, Science, ii. p. 835.] 
Renant, J. [See Rodentia.] 
Renson, G. Recherches sur le rein c6phalique et le corps de Wolff chez 
les Oiseauxet les Mammifdres. Arch. mikr. Anat. xxii. pp. 599-608. 
. Contributions h l’Embryologie des organes d’excretion des oiseaux 
et des Mammiferes. Bruxelles: 1883. 
[Not seen by Recorder; cf. the bibliography in A. R. Spoof’s “ Cloake 
und Urogenitalorgane.”] (See infra.) 
Repiaciioff, W. Em paar Worte fiber die morphologische Bedeutung 
der jfingsten Saugethierkeime. Zool. Anz. vi. p. 64. 
The author supports Metschnikoff’s theory that the impregnated ovum 
of Mammals represents a separate sexless individual. [Cf. C. S. Minot, 
Science, i. p. 289.] 
