Conchifera. Solen. 



ckgans, d'Orb. (SoLECURTUS radians), P. F. 322, 251, 3-5. 

 eleyans, Math. (SOLECURTUS), Cat. 134, 11, 3. 

 Guerangeri, d'Orb. (SOLECURTUS), P. F. 321, 351, 1-2. 

 inflexus, Dujard. (SOLECURTUS), M. G. S. F. 2d s. vol. ii, 222, 



15,4. 



lamellosus, Reuss (ARCOPAGIA), B. Kreid. 16, 36, 5. 

 irradians, Roem. Kreid. Tex. 45, 6, 9. Texas. C. 



Robinaldinm, d'Orb. (SOLECURTUS), P. F. 320, 350, 1-2. 

 subplicata, M. & H. (SOLEMYA), 1856, Proc. Acad. p. 56. 



Sphaera, Sow. 1822 (CORBIS, Cuv. 1817). 

 corruyata, Sow. (CoRBis), M. Con. 334. 



SPHAERELLA, Con. 1838. 

 concentrica, Con. Jour. Acad. 2d s. vol. iv, 280, 46, 4. Ala. ( . 



SPONDYLUS, Linn. 1758. 



alternatus, d'Orb. P. F. 665, 456, 1-5. Fr. C. 



Aonis, d'Orb. Prod. 294. Fr. Danien. 



asper, Miinst. Goldf. P. G. pi. 106, f. 1. G. 0. 



Brunneri, P. & R. Env. Genev. 514, 47, 1. Fr. G. 



calcaratus, Forbes, G. T. 2d s. vol. vii, 155, 18, 2. India. C. 



capax, Con. Jour. Acad. 2d s. vol. ii, 274, 24, 8. N. J. C. 



capillatus, d'Arc. (striatus), M. G. S. F. 2ds. vol. ii, pi. 17, f. 1. 

 Carautonensis, d'Orb. P. F. 665, 456, 6-7. Fr. C. 



complanatus, d'Orb. P. F. 657, 451, 7-10. Fr. L. G. 



Coquaridianus, d'Orb. P. F. 663, 452, 9-11. Fr. C. 



dumosus, Morton, Sp. pars* (Plagiostoma), d'Orb. Prod. 254. 



Ala. Eocene. 



duplicates, Goldf. (spinosus), P. Germ. 95, 105, 5. 

 Dutempleanus, d'Orb. P. F. 672, 460, 6-11. Fr. C. 



fimbriatus, Goldf. P. G. 97, 106, 2. E., G., Fr. C. 



gibbosus, d'Orb. P. F. 658, 452, 1-6. Fr. G. 



globulosus, d'Orb. P. F. 667, 458. Fr. C. 



gregalis, Morton, Sp. (Plagiostoma), d'Orb. Prod. 254. N. J. C. 

 Guadalupae, Roem. Kreid. Tex. 62, 8, 9. Tex. C. 



* The specimen figured in the wood-cut, Synopsis, p. 60, is distinct from the 

 lithograph. I would suggest the name S. Mortoni for it. Both the species are 

 Eocene ; the types are in the Museum of the Academy of Natural Sciences. 



