156 



Repokt of the State Geologist. 



12. Modiomorpha mytiloides (Con.), Hall. 



Tw o specimens are rather short, in this respect resembling M. 

 alia (Con.), H., but their umbonal slope is not sharp enough for 

 that species. Another specimen is much elongated and very 

 ventricose along the region of the umbonal slope. 



13. Modiomorpha macilenta, Hall (?). 



14. Microdon (Cypricardella) bellistriatus, Con. 



15. Palveonmlo plana, Hall. 



16. Leptodesma, sp. 



17. Small lamellibranch shell, possibly Modiomorpha. 



18. Goniophora, sp. 



19. Sphenotus, sp. 



20. Coleolus tenuicinctum, Hall. 



21. Belle rophon, sp. 



22. Cyclone ma multilira, Hall. 



23. Loxonema Hamiltonue, Hall. 



24. Pleurotomaria Itys, Hall. 



25. Orthoceras, sp. (fragments). 



XLII B 1 . About one and one-half miles southwest of Port Crane a 

 section was made extending from the canal level to the top of the high hill. 

 At the base of the hill, only a few feet above the river and canal level, are 

 olive, argillaceous shales in which fossils are rare, Spirifer mesasi/riaMs, Hall, 

 and Bhynchonella {Camarotcecliia) Stevensi, Hall (J), being the most common 

 species. The complete list is : 



1. Spirifer mesastrialis, Hall. (c) 



Mostly broken specimens, but they show clearly the tine striae 

 on the plications and sinus. 



2. Spirifer mesacostalis, Hall. (rr) 



The type of *S'. acuminata, Hall, 1843. Another specimen seemed 

 to be similar, but it has very fine striae on the plications, like 

 S. mesastrialis. 



3. Tropidohptus carinatus (Con.), Hall. (rr) 



4. Rliynchonella (Camarotoechia), Stevensi (H.), H. and C. (c) 



5. Chonetes setigera, Hall (?). (rr) 



Imperfectly preserved, with thirty to forty striae. 



6. Modiomorplia suhalata (Con.), Hall, var. Chern/wngensis, 



Hall (?). (rr) 

 Not clearly preserved. 



