2U $. VII. DELINEATIONS 



arata. Ambulacra 10, lata., stri- 

 ata., margiiie utroque punctatis. 

 Area? verrucosa; : verrucis par- 

 vis,, granulorum circulo cinc- 

 tis. Ad Linam arearuin sinus ex- 

 cavatus, in Var. b. profundus; 

 in var. c. fere obsolctus. 

 10. Specimens. SPECIMINA, 



Formarum fortuitarum. 



a. Sp. complanatum. In are- 



nario fissili. S. rarum. 



b. Sp. verrucis carens. Nucleu-s. 



S ul) stanti arum cotisti. 



1. Sp. ex ereta solida, matrice 



continuata cretae. 



2. Sp. ex substantia ,organica 



et pyromacho compositum. 

 Conser-vatum nuclcatum. 



3. Sp ex marga indurata^ raatrice 



Delineationis Exempla. f 



ICHTHYOLITHUS trigOHUS. 



ICHTHYOL. Pleuronectites oculis dextris, cor- 

 pore trigonali, maxilla super lore longiore^ cauda 

 truncata. S. p. 



f These are not, by any means, offered as complete or correct 

 descriptions, but merely as examples in the application of the 



