GENERAL SUBJECT. 
Mamin. 13 
that the true molars are serially homologous with the premolars, and not 
with the milk-molars. 
[Lataste, F.] Encore sur les Deux Dentitions des Mammiferes. T. c. 
pp. 475-480, 496-501, & 537-540. 
Comments on the criticisms of Beauregard (supra, p. 3), and supports 
the generally adopted opinion as to the serial homology of the true molars. 
The embryological arguments are next discussed ; and attention is directed 
to the serial homology of the incisors of Rodents and the teeth of Cetacea , 
which are referred to the permanent series. In conclusion, it is noticed 
that while the true molars of Diphyodonts develope from front to back, 
the premolars appear in the reverse direction, but the incisors in the 
same direction as the molars ; and it is argued that this affords import- 
ant evidence as to the homology of the teeth in cases of reduced dentition. 
[See also Rodentia.~\ 
Leciie, W. Saugethiere (Bronn’s Klassen u. Ordnungen, vol. vi, pt. 5), 
30th and 31st (1888) — Mammalia. 
. [See also Marsupialia and Dermoptera .] 
Lemoine, V. Sur quelques Mammiferes carnassiers recueillis dans 
PEocene inferieur des environs de Reims. C.R. cvi, pp. 511 & 512. . 
Notices certain jaws and teeth of Mammals from the Lower Eocene of 
Rheims, some of which are regarded as allied to Proviverra ; while one is 
compared to Spalacotherium, and made the type of a new genus, Tricus- 
diudon. 
Leydig, F. Pigraente der Hautdecke und der Iris. Verh. Ges. Wiirzb. 
xxii, art. 9, 25 pp. 
Reference is made to several Mammals in the course of this memoir. 
Loewentiial, N. Zur Kenntnis des Keimfleckes im Ureie einiger 
Sauger. Anat. Anz. iii, pp. 363-373, woodcuts. 
Observations on a method of showing the presence of the germinal 
spot in the Mammalian ovum, with a discussion of its characters. 
Lutken, C. II. Menneskelevninger i Brasiliens Huler og i de Lundske 
Samlinger. E. Mus. Lund, en Samliug af Afhandinger. i, art. iv. 
In this article (which has a summary in French) on the occurrence of 
human remains in the Brazilian cave-deposits, mention is made of a 
number of the Mammals of the same deposits. 
Lustig, A. Sulle Cellule Epitheliali nella Regioue Olfattiva degli 
Embryoni. Atti Ac. Tor. xxiii, pp. 324-333. 
Lydekker, R. Note on the Nomenclature of Three Genera of Fossil 
Mammalia. Ann. N. H. (6) i, p. 384. 
Notices the substitution by Trouessart of JElurictis for the preoc- 
cupied 2Elurogale ; proposes to adopt Stylacodon in place of Stylodon , 
which is likewise preoccupied ; but sees no grounds for replacing 
jffiluropsis by Huplogale. 
. [See also Ursidcc.] 
