Conchifera. 185 Tnoeeramiis. 



impressus, d'Orb. P. F. 515, 409. Fr. C. 



incurvus, M. & H. 1856, Proc. Acad. 277. Neb. G. 



inflatus, Tuomey, 1855, Proc. Acad. p. 171. Ala. C. 



involutus, Sow. M. Con. 583. E., Fr. C. 

 Lamarckii, Brong. Env. Par. 338. E., Fr., G., Sw., Crimea. C. 

 LamarcJcii, Mant. not Brong. (striatus), pi. 27, f. 1. 



latus, Mant. Geol. Suss. 216, 27, 10, E., Fr., G., Texas.* C. 



Lerouxii, Marcou, Geol. N. A. 36, 2, 3. Texas. C. 



lingua, Goldf. Petr. 113, 110, 5. G. 0. 



lobatus, Goldf. id. 110, 3. G. C, 



Mortoni, M. & H. 1860, Proc. Acad. 428. Neb. C. 

 mytihldes, Mant. (problematicus), Geol. Suss. pi. 28, f. 2. 



mytiloides, Roem. not Mant. (mytilopsis), Kreid. Tex. 60, 7, 5. 



mjtilopsis. Con. Emory's Rep. 153, 5, 6. Texas. G. 

 Nebrascensis, Owen, Rep. J. W. & M. 582, pi. 8, a, f. 1. Neb. C. 



Neocomensis, d'Orb P. F. 503, 403, 1-2. Fr. N. 



orbicularis, Munst. in Goldf. P. G. 117, 113, 2. G. G. 



perovalis. Con. 1852, Proc. Acad. p. 200. Ala. G. 



pertenuis, M. & H. 1856, Proc. Acad. p. 276. Neb. G. 



pertenuis, var. subdepressns, M. & H. 1860, Proc. Acad. p. 



427. Neb. G. 

 pernoules, Math, (striatus), Catal. pi. 25, f. 5. 

 pk'tus, Sow. (striatus), M. Con. 604. 



planus, Munst. in Goldf. 117, 133, 1. Fr., G. G. 



plicatus, d'Orb. Coq. Foss Col. 56, 3, 19. N. Grenada. N. 

 problematicus, Schlot. Sp. (Mytilus), d'Orb. P. F. 510, 406. 



Fr., G., E., Western United States. G. 



propinquus, Goldf. P. Germ. 112, 109, 9. G., E. G. 



proximus, Tuomey, 1855, Proc. Acad. p. 171. Ala. G. 

 pseudo-mytiloides, Schiel. 1855, Pacific R. R. Rep. vol. ii, 108, 



3, 8. Neb. G. 



regularis, d'Orb. P. F. 516, 410. Fr. . G 



Sagensis, Owen, Rep. J. W. & M. 582, 7, 3. Neb. G. 



* This species, together with /. 2^rohhmaticus and several other of the lower 

 chalk species, appear to be common to Europe, and the United States west of the 

 Mississippi , and I am inclined to think that the divisions Nos. 1 and 2, and a part 

 or perhaps the whole of No. 3 of IMeek and Hayden's section in Nebraska, and 

 some of the lower beds of Texas, may be found to be of the same age as the lower 

 chalk of England, the Turonien of d'Orbigny. The beds of New Jersey (except 

 perhaps the leaf bed which appears to correspond to No. 1), and of the Southern 

 States east of the Mississippi, are all above No. .3, while in Texas, Arkansas, and 

 Indian Territory, the lower deposits are found. 



VOL. VJil. — Z 



