INSTITUTE OF SCIENCE, PHILADELPHIA. 221 



receipt of better specimens from the Cape Fear River region has enabled me 

 to correct. The most characteristic feature of the species is the pupiform 

 manner in which the anterior end is contracted. In good specimens the 

 sculpture is sharp and strong. 



Drillia hoplophorus n. s. 

 Plate 14, figure i a. 



Pliocene of the Waccamaw beds at Tilly's Lake, S. C, Johnson ; of the 

 Caloosahatchie beds at Shell Creek, Florida, Willcox. 



Shell stout, with nine whorls sharply sculptured all over except the 

 blunt nucleus, which is worn in the specimens, but was probably smooth fol- 

 lowed by a reticulate sculpture ; on the rest of the shell the spiral sculpture 

 is composed of stout spiral threads, of which two at the periphery and two 

 at the suture are stronger, those on the anal fascicle close-set and smaller, 

 those in front of it alternated with finer ones, and these again on the body- 

 whorl often have a fine, sharp intercalary thread ; on the pillar the threads 

 are strong, but more uniform ; transverse sculpture of sharp, somewhat 

 elevated laminse in harmony with the incremental lines, which, except on the 

 fasciole, when perfect, somewhat reticulate the spirals and tessellate the 

 suturalpair; there are also eleven or twelve rather sharp, narrow, short ribs, 

 extending from the fasciole to the suture on the upper whorls, obsolete in 

 front on the body-whorl ; anal fasciole narrow, well marked with a sharply 

 cut notch at the outer lip ; suture closely appressed, on the early whorls 

 wound just in front of the periphery, giving an overhanging look to the 

 whorls which the lateroneslose ; body-whorl rounded ; pillar short, recurved, 

 covered with a smooth, continuous callus at the aperture; aperture narrow ; 

 outer lip arched, thin, simple, smooth inside. Lon. of shell 17.3 ; of last 

 whorl 1 0.0; of aperture 6.5 ; max. lat. of shell 7.0 mm. 



The principal features of this species, which is of the general group of 

 D. leucocyma Dall, are the narrow, constricted anal fasciole, the two prominent 

 peripheral and latticed sutural spiral threads, the irregular, strong, alternated 

 sculpture of the body-whorl, and the general prominence of the ornamenta- 

 tion. 



Drillia aphanitoma n. s. 

 Plate 14, figures i b, 2 b. 



Pliocene of the Caloosahatchie River and Shell Creek, Florida, Dall and 

 Willcox ; also from probably Pliocene beds on the Cape Fear River, North 

 Carolina, Johnson. 



Shell with a pointed, conical spire and large body-whorl, obsolete 

 sculpture, two smooth nuclear and eight later whorls; nucleus small, blunt, 

 followed by a closely reticulated third whorl ; spiral sculpture obscure, of 

 larger and smaller spirals, more or less alternated, but hardly interrupting 

 the continuity of the surface, the most evident being a peripheral pair; the 



