36 . 
of which he sent in July, 1819, to the Ro ral C 
my of Science, in France. Profesiile 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, “Il est beaucoup plus gros que les autres 
individus, et a pres de neuf centimétres de longueur. 
C’est avec doute que je rapporte cette empreinte 
tres-peu nette a l’espéce actuelle; mais malgré ses 
formes obtuses, et l’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 au calyméne macrophthalme, et 
avec d’autdnt plus de probabilité qu’elle vient aussi 
des Etats Unis d’Amérique. Elle a été trouvée, 
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 proiongation of the buckler is’ _ 
entirely occasioned by the loss of a small fragment 
from that portion of the head. The form and veya 
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. “Ihe head of the C. Ma- | 
crophthalma is always marked; minute and promi- — 
nent granulations, like shagreen—nothing of this kind 
appears on the buckler of the C. Anchiops. 
Ms . , fd 
