36 



of which he sent in July, 1819, to the Royal Acade- 

 my of Science, in France. Professor Brongniart re- 

 ferred the animal from which this model was taken, 

 though with much hesitation and doubt, to the spe- 

 cies, Calymene Macrophthalma. He remarks con- 

 cerning it, " II est beaucoup plus gros que les autres 

 indiviclus, et a pres de neuf centimetres de longueur. 

 C'est avec doute que je rapporte cette empreinte 

 tres-peu nette a Pespece actuelle; mais malgre ses 

 formes obtuses, et 1'absence de tout detail, elle est si 

 remarquable par la grosseur de ces yeux et par le 

 prolongement de son bouclier qu'on peut presumer 

 qu'elle appartient an calymene macrophthalme, et 

 avec d'autant plus de probabilite qu'elle vient aussi 

 des Etats Unis d'Amerique. Elle a etc trouvee, 

 suivant M. Hosack, dans un schiste." We have seen 

 the cast alluded to in the above note, and are not at 

 all surprised at the uncertainty which it has occa- 

 sioned. The apparent prolongation of the buckler is 

 entirely occasioned by the loss of a small fragment 

 from that portion of the head. The form and posi- 

 tion of the eyes, further distinguish it from any of 

 the numerous specimens of C. Macrophthalma, that 

 we have examined. The raised lines which we have 

 noticed as intersecting the costal arches of the lateral 

 lobes are remarkable, though they may have been 

 produced by accidental fissures in the epidermal 

 covering of the animal. The head of the C. Ma- 

 crophthalma is always marked by minute and promi- 

 nent granulations, like shagreen nothing of this kind 

 appears on the buckler of the C. Anchiops. 



