PALEONTOLOGY. 299 



G. liaiir (12) pves some points upon tlic cIassi(ic;itioii and relations 

 of the lclitli><)i»tery<4ia. lie concludes that "the Ichthyo])tery^ia were 

 develoi)ed from laiul-livin^ rei»tiles which v^ery much apjtroach the 

 Sphenodontida* ;" he classifies them in three families, viz: (1) Mixo- 

 saurida', Baur (including- the genus jMiiosaurns, Banr) ; (2) Ichthyo- 

 sauridie, Bona])arte (including the genus Ichthyosaurus, Koeuig, etc.); 

 (3) Baptauodoniida^, Marsh (iucluding Bapfanodoii, Marsh). 



F. W. Cragin (55) describes, without figures, Triuacromerion (gen. 

 nov.) and T. Bentonianum (si), uov.), pp. 405—407. This species is said 

 to beloug to the order Sauropterygia, to resemble the genus Baptano- 

 dou, Marsh, aud it may be identical generically with Piratosmirus, Leidy. 

 The author promises a fuller paper with illustrations in the ''Bulletin 

 of the Washburn College Laboratory of Natural History, Topeka, 

 Kansas." 



E. D. Cope (52) announces the discovery of the remains of the genus 

 Goniopholis, and describes a new species under the name of G. Lucasii, 

 p. 1107 (no fignre). In the paper (39) on American Triassic Rhyncho- 

 cephalia, he describes, more fidly than in the original article, Typo- 

 thorax coccinarium, Cope, and from the stndy of new material he con- 

 cludes that the species is allied closely to the genus JEtosaurus of 

 Fraas. In another paper (43), the same author describes the following 

 new species from the Trias of North America : 



Episcoposaurus liorridits, p. 213; tlie genus of this species is also uew aud is con- 

 trasted with Belodon. (No iHuatratious. ) 

 Tanystrophwits irilUstoni, p.2'27. (No figure.) 



Additional characters are described for the following species : 



EupcJon ditrus, Cope. 

 Typotliorax coccinarum, Cope. 

 lidodon hiiccros, Cope. 

 Belodon ficolojiax, Cope. 

 Tanyiitrophaus lont/icollis, Cope. 

 TanystroplKSus lianri, Cope. 



Henry F. Osborne (204) compares and contrasts the two genera 

 Dromatherium, Emmons, and Mioroconodon, Osborne, and finds reason 

 for considering them ( juite distinct types of animals. The Dromatherium 

 he regards as distinct from any known mammal, recent or fossil, pre- 

 senting some reptilian features, while the Microconodon is a more re- 

 cent type and approaches in the form of its teeth some of the Jurassic 

 mammals. The genus Microconodon was described by the author in 

 the Proceedings of the Philadel]>hia Academy of Natural Sciemie for 

 188G, page 3G2. It is founded upon the specimen in the collection of 

 the Academy of Natural Science at Philadelphia, which was originally 

 named Dromatherium by Emmons. The type of Dromatherium is D. 

 sylvestre, Emmons, 1857, the original specimen belonging to the museum 

 of Williams College. In this paper both specimens are figured. 



