AMERICAN NATURAL HISTORY. 11 



Zaphrentis denticulata. Niagara. 



(Anthophyllum denticulatum, Goldf.). 

 Zaphrentis gigantea. United States. 



{CaryopHllia gigantea, Lesu. Turbinolia buceros, Raf. & Cliffy 

 Aulacophyllum salcatum. Ohio Falls. 



[Caninia sulcata,. d'Orb.). 

 Cyathophyllum rectum. United States. 



[Strombodes rectus, Hall). 

 Cyathophylium distortum. United States. 



(Strombodcs disiortus, Hall). 

 Cyathophyllum rugosum. United States. 



(Astrca rugosa, Hall). 

 Strombodes striatus. Drummond Island. 



(Favastrca striata, d'Orb.). 

 Lithostrotion mammillare. United States. 



(Astrca mammillaris, Casteln.). 

 Lithostrotion hermodites. North America. 



[Lithodendron irrcgularc, Casteln.). 

 Cystiphyllum Americanum. North America. 



(Cystiphyllum cglindricum, Hall). 



Foster (J. W.). On the fossil fish in the eoal rocks of Ohio.— 

 Amer. Journ. of Sc. xn. 1851, 281. (79 



Gtbbes (Robert W.). A memoir on Mosasaurus and the three allied 

 hew genera, Holcodus, Conosaurus, and Amphorosteus. — 

 Smiths. Contr. to Know!., n. 1851. (80 

 Amphorosteus (n. g ) Brumbyi. 

 Conosaurus (n. g.) Bowmani. 

 Holcodus (n g.) columbiensis. 

 Mosasaurus carolinensis. 

 Couperi. 

 minor. 



Jackson (C. T.). Discovery of fossil fish in the coal formation of 

 New Brunswick. — Amer. Journ. of Sc. xn. 1851, 281. (81 



Lathrop (S. P.). A locality of mastodon remains in northern Illi- 

 nois — Am. Journ. of Sc. xn. 1851, 439. (82 



Leidy (Joseph). Description of a new species of crocodile, from the 

 miocene of Virginia. — Journ. Acad. Nat. Sc. Philad. jfefe*. 

 ser. ii. 1351, 135. PI. xvi. (8? 



Crocodilus antiquus. 



