108 ON THE SECONDARY AND TERTIARY FORMATIONS 



Appendix to Mr. Hodge's Paper, describing the Neio Shells, (^-c. 



BY T. A. CONRAD. 



Mr. Hodge having requested me to name the fossils collected in 

 his late excursion through a portion of the tertiaiy region, and to 

 describe such as are new, I oiler the following descriptions, and 

 references to species formerly described ; the localities visited by- 

 Mr. Hodge belong chiefly to the medial tertiary deposits ; the other 

 formations are the cretaceous and lower tertiary. One of the tertiary 

 localities I noticed in Silliman's Journal, volume xxxix, p. 387, and 

 described some of the shells which occur there, from specimens in 

 the collection of my friend D. B. Smith. The following list of spe- 

 cies is made out from his collection. The fossils are embedded m 

 quartzose sand, with a large admixture of comminuted shells : 



Natica canrena, Conus adversarius, Mitra Carolinensis, Fulgur 

 excavatus, F. contrarius, F. maximus, Cyprea Carolinensis, Crepi- 

 dula fornicata, Turritella Mitchelli, Cerithium Carolinensis, Bucci- 

 num multirugatum, Fasciolaria rhomboidea, Lucina Jamaicensis, 

 Area transversa, Mactra crassidens, P^ctunculus quinquerugatus. 

 References and Descriptions of new Species. 



OLIVA. 



•Oliva litterata. Lam. Plate V, fig. 1. 



BUCCINUM. 



^Buccinmn interruptum. Plate V, fig. 2. Elevated, subfusiform, 

 with longitudinal ribs and transverse impressed lines, two below the 

 suture ; middle of the whirls entire, sides flattened, lower half of body 

 whirl with equal prom.inent lines. 



- B. imdtirugatum. Ovato-conical, with numerous wrinkled spiral 

 lines, coarser and more distant near the su'ture and at base of the 

 body whirl ; base bicarinated and subumbilicated ; columella with a 

 thick fold at base. Length two inches ; width, one and one eighth 

 inches : from the collection of D. B. Smith, Locality, Natm-al well, 

 DupHn county, North Carolina. 



CONUS. 



' Cojius adversarius. Plate V, fig. 3. For description, see Silliman's 

 Journal, volume xxxix, p. 388. Mr. Hodge has one dextral shell, the 

 only one I have seen among eight or ten specimens of the species. 



CERITHIUM. 



" Cerithium unilineatum. Plate V, fig. 4. Slightly turreted ; volu- 

 tions with each a spiral impressed line above the middle ; space 

 between this line and the suture with oblique plicae. 



