298 RECORD OP SCIENCE FOR 1887 AND 1888, 



gives the iiatoes of the following new si)ecies and genus: Gladoaus Kep- 

 leri, i)|). 178,179; ActinophoruH (gen. nov.) p. 170; A. Glarlcii, p. 179; 

 Dinichthys ctirtm, ii. 179 ; J), tiiherculatus, p. 179. In the paper (197) a 

 new species is briefly noticed under the name Rhizodiis anceps, p. 165, 

 discovered by William McAdams in the St. Louis limestone at Alton, 

 Illinois. 



A paper was read by J. F. Whiteaves (293) in May, 1888, before the 

 Royal Society of Canada, entitled " Illustrations of the Fossil Fishes of 

 the Devonian rocks of Canada." (If this is published, a copy has not 

 yet reached me. March 30, 1889.) 



Edward D. Cope (41), in connection with a brief notice of the Part on 

 Fishes of Zittel's Manual of Paleontology, takes occasion to give a 

 synopsis of his own views on the subject of the classification of the low- 

 est vertebrata, in anticipation, as he informs the reader, of a fuller 

 memoir with illustrations. 



J. W. Hulke (118) discusses the characters of Oniithopsis, H. G. See- 

 ley, and Omosaurus, R. Owen, pointing out the propriety of following 

 the classification of Professor Marsh, and places Ornithopsis in the 

 group Sauropoda, and Oinosaurus in the group Stegosauria. He 

 questions whether the specimens in the Leeds collection called Oyno- 

 saurus should not with justice be referred to the genus iStcgosmirus, 

 Marsh. 



R. Lydekker (153), in an article in the Geological Magazine, makes 

 some corrections in his Catalogue of Fossil Reptilia, suggested by con- 

 versations with O. C. Marsh during a visit to the Dinosauriau and other 

 collections in the British Museum. 



O. C. Marsh (164) describes one new genus and five new species of 

 Dinosaurs from the Potomac formation in Prince George's County, 

 Maryland : 



Pleurocoelus namis, gen. et sp. nov., p. 90-92, f. 1-6. 



Pleurocu'lus alius, sp. nov., p. 92. 



Priconodon crassus, gen. et sp. nov., p. 93, f. 7-9. 



AUosaiirus viediiis. sp. nov., p. 93. 



Ccelurus gracilis, sp. nov., p. 94. 



The same author (162, 163) describes the principal characteristics of 

 the skull and dermal armor of StegosauruSj illustrating them by numer- 

 ous figures. 



The paper by E. D. Cope (53) is a short notice of the paper just men- 

 tioned. E. D. Cope (38) discusses the characters of the Dinosauriau 

 genus Ccelurus of Marsh. He regards the genus as Dinosauriau, allied 

 to Megadactylus, Hitchcock, and describes the following new species: 

 Ccelurus longieollis, p. 368, and Ccelurus Bauri, p. 368. 



H. G. Seeley (234) discusses the characters of a vertebrate from the 

 Wealden Beds of the Isle of Wight, called Thecospondylus Daviesif 

 Seeley, and compares it with Ccelurus frag His of Marsh. 



