103 



farnislied by the structure of the molar teeth, and a modification is 

 therefore introduced in the subdivision of the Insectivora vera, or Bes- 

 tia'j into two groups, distinguished, (1) one by the development of sub- 

 equal fore and aft regions, and (2) the other by the development of sin- 

 gle transverse triangles. That the physiognomy of the Macroscelidoi- 

 dea, and especially the Tnpaiidte, is not as distinctive as might have 

 first appeared is evident from the fact that a peculiar Indian form 

 (HyJomys), long associated with the Tui^aiidne on account of its habitat 

 and physiognomy, — and by such therologists as Gray, Gervais, Mivart, 

 etc., — proves now to be closely related to the Erinaceoid genus Gymnura. 



MONOGrRAPHIC ESSAYS. 



The principal families have severally been the subjects of elaborate 

 researches by naturalists ; and special attention has been paid to 

 the dentition of the Centetidae, * Eriuaceidie, t Soricidte, t and Tal- 

 pidne ;§ while m late memoirs, the placental, || cerebral,*} and osteolog- 



* Eeinhardt (J.) Mselketandsaettet og Tandskiftningen hos Centetes ecaudatus (Schr.) 

 <^Overs. Dansk Ved. Selsk. Forhandl. f. 1669, pp. 171-178, Tvith -woodcuts. 



tSahlertz( — ). Tandstettet ogTandskiftet hos Pindsvinet( Erinaceus europaeus). -^Vi- 

 denskab. Meddels. fra Naturh. Forening Kjobenhavn for 1^^71,(3) III, 350-385, pi. 9, 

 1871-72. (Resume frangais, 36-42.) 



Sahlertz ( — ). Du systeme dentaire et du romplacement des dents chez le h^risson. 

 <^Journ. de Zool. Paris, 1873, pp. 27.5-281. 



Keprint of the "Eesume frau^ais from Yid. Meddeels fra Nat. Forening Kjob., 1871-72, 

 36,42." 



t Gray (John Edward). [Revision of the genus Sorez, Linn. ] <^Proc. Zool. Sue. London. 

 Y, 123-126, 1837. 



Duvernoy (G. L.) Fragmens d'histoire naturelle systematique et physiologique sur les 

 Musaraignes (Sorex). < L'Institut, 11, 299, 1834 ; Bibl. Univ., II, 195-J96, 1836; Mem. 

 Soc. hist. nat. Strasbourg, II. — 36 pp. 3 pi. -j- (supplement) 7 pp., 1835. 



Duvernoy (G.L.) Notices pour servir a la monographie du genre Musaraigne (Sorex, 

 Cuv.) <^]Mag. de Zool. 1842, — Mamm., pi. 38-54 (with 48 pp.) ; Comptes Kendus Acad. Sc, 

 Paris, XY, 7-13, 1842; I'lustitut, X, 247,243, 1842. 



Duvernoy (G. L.) Sur les dents des Musaraignes, considerees dans leur composition 

 et leur structure intime. leurs rapports avec les machoires, leur developpement et leur suc- 

 cession. < Comptes Rendus Acad. Sc. Paris, XV, 270-278, 304-314, 483-491, 1842; 

 Deutsch. Naturf. Yersamml. Bericht., 225-226, 1842 ; France, Congres Scient., 189-191, 1842. 



Duvernoy (G. L.j Deuxieme supplement au Memoire sur les dents des Musaraignes 

 et autres mammiferes. <^Comptes Eendus Acad. Sc. Paris, XYII, 98-105,. 1843. 



Duvernoy (G. L.) Sur les dents des Musaraignes, considerees dans leur composition 

 et leur structure intime, etc. <^Mem. pres. a TAcad. d. Sc. Paris, Sc. math, et phys. IX, 

 333-432, 4 pi., 1846. 



Peters (Wilhelm). Ueber die Gebissformel der Spitzmiiuse. <Bericht Berlin Akad., 

 1852, 169-179: Archiv f. Naturg., XVIII, 220-227, 1852; Fror. Tagsber., No. 570 (Zool., 

 Ill, 1852), 81-86. 



Brandt (fidouard). Izslvedovaniya o zubnoi sistemye kutor i zemleroek. St. Petersburg, 

 1865. [8vo, 117 pp., with 6 pis.] 



[Researches on the dental system of the shrews (Sorex, Cuv.)] 



Brandt (Edouard). Untersuchungen liber das Gebiss der Spitzmause (Sorex, Cuv.) mit 

 6 lithographirten Tafeln. <^Bull. Soc. Imp. Nat. Moscou, 1838, XLI, 2e partie, 76-95, pi. 

 1-6, 1869; XLIII, 2e partie, 1-40, 1871. 



^ Bate (C. Sp. j On the dentition of the common mole (Talpa Europsea). <^Ann. and 

 Mag. Nat. Hist., XIX, 377-381, 1867, with a plate, and (in full) Trans. Odontolog. Soc, Y, 

 261-294, with 6 pis., 1867. 



Moseley (Henry N.) and E. Eay Lankester. On the nomenclature of mammalian 

 teeth, and on the dentition of the mole (Talpa Europcea), and the badger (ileles taxus). 

 <Jour. Anat. and Physiol., Ill, 73-80, pi. II, figs. 5, 6, 1868. 



II Rolleston (George). On the placental structures of the Tenrec (Centetes ecaudatus), 

 and those of certain other mammalia ; with I'emarks on the value of the placental system of 

 classification, .... 1863. <\Trans. Zool. Soc. London, Y, 285-316, pi. 50,1866. 



^ Gervais (Panl). Memoire sur les formes cerebrales propres a diflerents groupes de 

 mammiteres. <^Jonrn. Zool., I, 425-469, pis. 20-23, 1872. 



A memoir on the cerebral forms of Toxodon, Pteropodidre, Galeopithecus, Erinaceids, 

 Tupaia, Centetes, Ericulus, Macroscelis, Typotherium, Tragulus, Hyeemo&chus, Oreodon, 

 Cainotherium, Hyrax, Ondatra, Sciuropterus, Dipus, Spalax, Arctomys, Pedetes, Myopota- 

 mus, Synetheres, Lagostomus, Hystrix, Coelogeuj's, Dasyprocta, Hydrocha'rus, and Cavia. 



