SYSTEMATIC WORK. 
Mamm. 47 
Phalangistiml 
Thomas (316). General account of the family. 
Gymnobelideus leadbeateri. McCoy (204), description and coloured 
plate. 
Cuscus. Jentink (153), monograph of the genus; 4 species are 
recognized, viz., C. orientalis , celebensis , maculatus , and ursinus. 
MaCROPODIDjE. 
Macropus jukesii , p. 891, and gracilis, p. 894, spp. nn., Miklouho- 
Maclay (208), from near Port Moresby, New Guinea. M. tibol , sp. n., 
Miklouho-Maclay (211), p. 141, from the Maclay coast in New 
Guinea. 
Dorcopsis beccarii , p. 146, and macleayi, p. 149, spp. nn., Miklouho- 
Maclay (212), from the South coast of New Guinea. 
Dendrolagus dorianus. Miklouho-Maclay (209) on the forward 
direction of the hair on its back. 
Didelphyid^. 
Didelphys virginiana. Selenka (290) on its development. 
Chironectes variegatus. Sidebotham (294) on its myology. 
POLYHASTODONTIDiE. 
Polymastodon attenuatus , sp. n., Cope (78), p. 494, from the Lower 
Eocene of New Mexico. P. latimolis , sp. n., Cope (75), p. 385, Puerco 
epoch of New Mexico. 
Plagiaulacid.e. 
Neoplagiaulax americanus , sp. n., Cope (78), p. 493, from the Lower 
Eocene of New Mexico. N. copei, sp. n., Lemoine (186), p, 213, from the 
Cernay beds, near Reims, 
12. MONOTREMATA , 
Caldwell (56). Development of Echidna and Ornithorhynchus . 
Fletcher (112). Bibliography of the Monotremata . 
Echidniml 
Echidna. Thomas (312) on the various species and races of this genus, 
the species are two in number— E. aculeata and Proechidna bruijnii ; 
Ramsay (261a) on its Marsupial egg ; Guldberg (135) on the histology of 
the ovarian ovum; Beddard (27), histological structure of its ovary. 
E. hystrix : Haacke (140) on its egg. E. acanthion: Collett (67), 
notes on this species recently described from Northern Queensland, 
