480 PROCEEDINGS OF THE ACADEMY OF [1896. 



revolving lines on its central portion, and with coarser lines above 

 the carina and near the base. 

 Locality, Bell's Landing, Ala. 



Solarium greggi n. sp. PL XXIII, fig. 5, 5a. 



Whorls about 5. Nuclear whorls rounded smooth ; remaining 

 whorls with three crenulate spiral lines and one smooth, strong 

 spiral line just above the suture. Periphery above the body whorl 

 with one deeply incised spiral line, thus rendering the periphery of 

 the body whorl obtuse. Umbilicus small, with radii extending from 

 its periphery about i way across the body-whorl, and having a 

 raised spiral coarsely crenulate carina medially located. 



Locality, Gregg's Landing, Ala. 



MIDWAY STAGE. 

 Pleurotoma (Cithara ?) leania Harris. PI. XXIII, fig. 7. 



This species is rather remarkal)le for the extreme shallowness of 

 the retral sinus. It seems never to attain a much greater size than 

 that indicated by the figure (X 2i). 



Type, Lea Memorial Collection, Academy of Natural Sciences 

 of Philadelphia. 



Locality, Matthew's Landing, Ala, 



Pleurotoma (Surcula) ostrarupis Harris. Plate XXIII, fig. 8. 



This species was described from a peculiar looking fragment from 

 the Midway beds on Brazos River, Texas. It proves to be quite 

 common in the upper Midway of Alabama. 



Locality, Matthew's Landing, Ala. 



Natica mediavia T Harris. PI. XXIII, fig. 8. 



N. mediavia Har., Bull. Am. Pal., No. 4, 1896, p. 117, pi. 12, fig. 15. 



While working over a large amount of material from the upper- 

 most Midway limestone, as exposed on the Chattahoochee, several 

 fragments of N. mediavia were found of the size indicated by the fig- 

 ure of the type in Bulletin 4. It was soon found that fragments, too, 

 indicated a considerably larger size for some specimens as found H 

 miles northeast of Clayton. Fragments of the body whorl of what 

 would seem to be the same species occur at Matthew's Landing. 

 They certainly belong to the species herewith figured. Hence it is 

 quite probable that this larger specimen, much compressed vertically, 

 belongs to the same species as the smaller specimen figured in Bul- 

 letin No. 4. 



Locality, Matthew's Landing, Ala. 



