Description of Plate. 97 



Fig, 5. Restoration of the thoracic limbs of the fourth thoracic segment 

 posterior to the liead. 

 en. endopodite. ex. exopodite. 



Fig. 6. Diagramatic restoration of the second thoracic hmb. (After 

 Beecher.) 



Fig. 7. Restoration of thoracic Umb of Calymene sencma. 



en. endopodite. e.c exopodite. ep. epipodite. (Bull. Mus. 

 Comp. Zool. Vol. 8, 1881.) 



Fig. 8. Cephalic Umb of Calymene X 3 ; supposed antennule. 



Fig. 9. Cephalic limb figured by Dr. Henry Woodward. (Quart. Jour. 

 GeoL Soc. London. Vol. 26, 1870, p. 487. a. side of hy- 

 postoma 



Fig. 10. Slender jointed legs associated in same beds with Calymene at 

 Cincinnati, Ohio, 



