. VII. OF RELIQUIA. 217 



Amphibiolithus Glossopetra. v. subanceps basi 



bifurca. Linn. Syst. 158. 6. 

 Ichthyolithus Glossopetra. v. subanc Gmel. Ed. 



Syst. Nat. 390. 4. 

 Dentes Squall. Brand. Foss. Hant. 42. t. iv. f. 



113. 114. 115. 

 Icthyodontes cuspidati Glossopetra. Luid. Lithoph. 



Brif 64. 19601274. 



Varietates. 



a. Gracilis srepe rectus. Ornithoglossum. Luid. 



Litfi. 64. 12661274. t. 15. f. 1270. 1266. 



b. Latus saepe falcatus. Gracirrhynchus. Luid. 



Lith. 64. 12601266. t. 15. f. 1260-1261- 



Arrow-shaped Tongue-stone. 



Conservatum, raro Petrificatum. 



Tractus varius, secund. vetulus vel recens ; nunc 

 cretaceus, nunc margaceus, nunc arenaceus- 

 Sedcs : strata utplurimum margfe ; interdum 

 argil lae vel cretae, reliquio saepe vago. 



In England, near Witney, North fleet,, Hampstead, 

 Milford^ &c. On the shores and in the cliffs of 

 the island of Sheppy. Frequent in the islands of 

 the Archipelago ; common, also, in Italy. 



DESCRIP. Rel. dentale Squali specie nobis 

 ignoti. Long. 1 3 unc. Radix subgibbosa, 

 supra ad basin cuspidis utrinque denticulo ac- 

 cuto, nonnunquam duplici^ armata; in medio 

 lateris puncto (vestigio tendinis) signata ; et in 

 ima parte bifurca,, processibus divaricatis, obtusis, 



F f 



