36 FOSSILS FROM SOUTHEUN UNITED STATES— BALL. vol. xvm. 



A single specimen was found with tlie fossils from the lower bed at 

 Alum Bluif (2211), but as some St. Mary's fossils had been standing- 

 close by on the same table before sorting I believe that this single 

 specimen is probably an estray. The species is readily recognizable 

 and most nearly allied to the slender form of T. simplex, Conrad, found 

 in tbe same bed at St. Mary's IJiver, but which may be distinguished 

 by its more conical form and larger size when adult. The name of inor- 

 nata was applied by Professor Whitfield to the K"ew Jersey form in his 

 report on the Gastropods of the Miocene marls of New Jersey.' It is 

 still more abundant in Maryland, and as the specimens do not appear 

 to differ in any essential way, T adopt Professsor Whitfield's name for 

 the species. 



TEREBRA (ACUS) POLYGYRA, Conrad. 

 Teychrapohjiiijra, Coxkad, Journ. Acad. Nat. Sci. Pbila., VII, p. 156, 1834. 

 This form, described from Claiborne by Conrad, was not figured by 

 him, and seems to have been forgotten both by Conrad and Meek in 

 making up their check lists. It has since been redescribed by de Gre- 

 gorio, who has figured it as T. andrega, and probably as 1\ igytara. It 

 is a small shell, prefiguring T. divisiira, Conrad, from the young of 

 whicli it can hardly be distinguished, except as more slender. I have 

 thought it well to direct attention to it, as it is clearly distinct from 

 T. vemista. 



TEREBRA (ACUS) TANTULA, Conrad. 



Tliis species, described from the Vicksburgian Eocene, appears also 

 in the older Miocene of Santo Domingo, of the Tampa Orthaulax bed, 

 and of the Alum Bluff beds at De Funiak Springs, Florida. It may be 

 distinguished from T. pohjgijra and otber similar species by its spiral 

 striation. 



TEREBRA (ACUS) CURVILINEATA, new species. 



Shell acute-conic, solid, with 12 to 11 moderately convex whorls; early 

 whorls more flatsided, with numerous narrow, transverse, slightly 

 waved riblets, extending from suture to suture, with about equai inter- 

 spaces; suture very distinct; sutural band formed by a vaguely limited 

 constriction, not a groove; a short distance in front of the suture the 

 ends of the ribs thus delimited fiom the rest have a tendency to coro- 

 nate the whoi'l ; on the later whorls the ribs become less regular and 

 somewhat less prominent; aperture longer than wide; outer lip sim- 

 ple; pillar elongated, twisted, smooth; siphonal fasciole very distinct. 

 Longitude, 27 ; maximum diameter, 0.5 mm. in a specimen of 11 whorls. 



Habitat. — Older Miocene of Jericho, i^ew Jersey, and Easton, Mary- 

 land, Burns and Harris. Tbe specimens from Maryland are larger 

 and in better preservation than those found in Xew Jersey. 



Types.— ^o^. 100952, 111G48, U. S. N. M. 



Moll, aucl Crust. Mice. N. J., p. 114, pi. xx, figs. 11-13, 1894. 



