<>. Mammalia. II. Ordres, Families and Genera. 1 I 79 



Pcramcks Bvoadbentii, n.sp.E. P. Ramsay in: Proc.of the Lin.Soc. of New South 

 Wales. 1879. Vol. III. part 4. p. 402. plate 27. Hab. Port Moresby, in some 

 of the dense mountain scrubs on the banks of the Goldie River. 



Didelphys Turneri, n. sp. A. Giint her in: Ann. and Mag. Nat. Hist. Vol. 4. 1879. 

 p. 108. Hab. Demerara. 



Pliascolotherium. Note on a femur and a humerus of a small Mammal from the Sto- 

 nesfield Slate. H. G. See ley in : Ann. and Mag. of Nat. Hist. 1879. Vol.3, 

 p. 317. 



Phascolotheriiim or Amphitherium? H. G. Seeley detected from a fragmentary re- 

 main of Pterodacti/lus from the Stonesfield Slate two small slabs containing a small 

 mammalian femur and a mammalian hnmerus of corresponding size, belonging 

 perhaps to one of the two above named genera. Quart. Journ. of the Geol. 

 Soc. London 1. August 1879. p. 456163, two woodcuts. 



Thiodnn, n. g. 0. C. Marsh. Four lower molar teeth instead of three [Triconodon 

 Owen) the middle cone on each tooth is the largest (in Tricoiwdm Owen they are 

 nearly of the same size) . Last lower molar only about half as large as those 

 before it. - Tlnodon bdlus, n. sp. 0. C. Marsh, from the Jurassic beds of the. 

 Rocky Mountains. Arner. Journ. of Sc. and Arts, 1879, Third Series, Vol. 18. 

 p. 215, with a woodcut. Tinodun rnbustus and lepidtis nn. spp. id. ibid. 

 Vol. 18. 1879. p. 397 and 398. From the Upper Jurassic of Wyoming. 



Styhtcodon, n. g. 0. C. Marsh. Crowns of premolars more or less compressed and 

 recurved, some of them supported by two fangs, with a small posterior tubercle at 

 the base of the crown, but none in front. Molar teeth single-fanged, with ele- 

 vated conical crowns. The molars increase in size from the first to the fifth. 

 All the teeth preserved have the crowns raised considerably above the upper 

 margin of the jaw and appear to be loosely inserted. This genus constitutes with 

 the genus Sfi/l<xl<m a distinct family: Stylodontidae. - - Stylacodon gracilis, n. sp. 

 found in the Jurassic beds of the Rocky Mountains. Amer. Journ. of Sc. and 

 Arts. 1879. Third Series. Vol. 18. p. 60. 



Clcnacodon, n. g. Differs from Placjianlax in having four lower premolars instead of 

 three, and is further caractcrizcd by the absence of the oblique grooves on the 

 sides of the premolar crowns. - - Ctenacodon scrratus, gen. et n. sp. 0. C. Marsh. 

 Amer. Journ. of Sc. and Arts. 1879. Vol. 18. p. 396. Found in the Atlanto- 

 saurus beds of Wyoming. The genus Clma-codim belongs with Playiaulax to a 

 well marked family, viz : Plagiaulacidae Marsh. 



Dryolestcs arcuatus, n. sp. 0. C. Marsh. Amer. Journ. of Sc. and Arts. Vol. 18. 

 1879. p. 397. Upper Jurassic of Wyoming. - Dryolcsfi-.t runu-, n. sp. 0. C. 

 Marsh. Found in the Jurassic beds of the Rocky Mountains. Amer. Journ. of 

 Sc. and Arts. 1879. Vol. 18. p. 215. - - See also: Verhandl. der K. K. Geol. 

 Reichsaustalt. 1879. Nr. 14. p. 329. 



