INSTITUTE OF SCIENCE, PHILADELPHIA. 23I 



characters. It seems quite probable that to a young, nodulous and imperfect 

 specimen of this species the shell figured by Emmons as F. nodulosa is to be 

 referred. Neither figure nor description is sufficiently distinctive, and the 

 types having been burned in the State Capitol, during the late war, there can 

 be no appeal to them for enlightenment. There was already a F. nodjdosa of 

 Defrance. F. alternata Emmons was perhaps a Latirus. It must be relin- 

 quished as neither sufficiently described nor anywhere figured. 



Pasciolaria elegans Emmons. 

 Plate 13, figure 9. 

 Fasciolaria elegans Emmons, Geo!. N. Car. Rep., p. 252, fig. 114, 1858. 

 F. [Terebraspira) elegans Conr., Proc. Acad. Nat. Sci. Phila., 1862, p. 561 ; Miocene 

 Checkl. Inv. Foss., Smiths. Inst., p. 21, 1864. 



Miocene of Duplin Co., N. C, Emmons and Willcox ; Pliocene of the 

 Waccamaw River (worn fragments), Johnson. 



Shell strong, elongate (decollate), with more than eight whorls ; apex 

 (lost, probably three or four whorls)? earliest remaining whorl (diam. 5 mm.) 

 as well as the next one with eight rounded ribs, behind which it is constricted, 

 crossed by about six raised spiral threads; general outline of whorls flattened 

 from the periphery toward the suture, rounded in front, attenuated toward the 

 canal ; suture distinct, deep ; transverse sculpture except on the earlier turns, 

 consisting only of rather strong incremental lines; spiral sculpture of obscure 

 microscopic striations and occasional grooves, and (between the sutures six) 

 on the last whorl about thirteen strong, elevated spiral ribs with narrower 

 deep channelled interspaces with a few minor threads on the siphonal fasciole ; 

 canal short, recurved ; aperture elongate, narrow behind and before ; outer lip 

 slightly flexuous, sharp-edged, thin, crenulated by the sculpture ; internal 

 lira; numerous, close-set, not all equally long ; on the body a sharp subsu- 

 tural lamina and a group of rather irregular, short, sharp, elevated lines, a few 

 irregular, elongated granulations in front of the ends of the plaits on the 

 pillar at the beginning of the canal ; inner lip callous, mostly smooth ; sipho- 

 nal fasciole strong. Lon. of decollate shell 122, of aperture and canal 66, of 

 last whorl 87, max. lat. of last whorl 54 mm. 



This splendid species was very inadequately figured by Emmons, for 

 which reason a new figure of Mr. Willcox's specimen is given. The plaits 

 are like those of F. acuta, and in the adult are visible only from the side; 

 but the difference in this respect from other species is so slight that it seems 

 unnecessary to propose, as Conrad has done, a new sub-generic name for it. 

 The prominence of the plaits on the pillar is dependent on the stage of growth, 

 and they are less conspicuous in fully adult shells throughout the genus than 

 in those not perfectly mature. The fragments from the Pliocene were so 

 worn as to waken a suspicion that they had been derived from an antecedent 

 bed and did not really form a part of that fauna. They were more distinctly 

 and strongly transversely ribbed than the one figured. 



