FAUNA OF ORTHAULAX PUGNAX ZONE. 7l 



calary thread frequently intervening; final varix strong, the body 

 without callus, the outer lip Avith small denticles internally, siphonal 

 fasciole feeble, canal (defective), aperture large, obovate. Height 

 16, of last whorl 11, maximum diameter 11.3 mm. 



Tampa silex beds, collected by E. J. Post, but received too late for 

 figuring. U. S. Nat. Mus. No. 214737. 



This species belongs to the group of A. versicolor C. B. Adams, of 

 the Pacific coast recent fauna. It is named in honor of Miss Julia 

 Gardner, of the Johns Hopkins University, whose work in paleon- 

 tology of our Tertiary has been praiseworthy. 



Family COLUMBELLIDAE. 



Genus COLUMBELLA Lamarck. 



Columbella Lamarck, Prodrome, 1799, p. 70. Monotype, Valuta mercatoria 



Linnaeus. 

 Columbella Lamarck, Ad. s. Vert., vol. 7, p. 292, 1822. 



The genus Pyrene Bolten, proposed in 1798, for Buccinum puncta- 

 tum Bruguiere {semipunctatum Lamarck) is sufficiently distinct from 

 the true Columbellas to be regarded, as by the brothers Adams, as 

 a distinct genus, although it has sometimes been held to preoccupy 

 the name of the Lamarckian genus. 



Subgenus ANACHIS H. and A. Adams. 



Anachis H. and Adams, Gen. Rec. Moll., vol. 1, p. 184, 1853; no type se- 

 lected.— Dall, Proc. Boston Soc. Nat. Hist., vol. 13, 1870, p. 242. Sole 

 species, A. a vara Say. 



ANACHIS EUTHERIA. new species. 



Plate 12, fig. 11. 



Shell small, slender, attenuated, with a minute blunt tip of 2 

 smooth, inflated wdiorls, and about 6^ subsequent reticulately sculp- 

 tured whorls; suture well defined, but not appressed or channeled; 

 sculpture of, on the penultimate whorl, about 16 rather sharp, uni- 

 form, axially directed lamellae, slightly concavely flexuous on the 

 later whorls, and passing from the suture over the whole whorl to the 

 canal without enlargement or nodulation ; these are crossed between 

 the sutures by 4 or 5, and on the last whorl by 13 narrow, equal 

 revolving threads, flat-topped, and about equal to the lamellae on the 

 spire; dividing the surface into rather deep rectangular reticula- 

 tions ; on the last whorl the lamellae assume the form of narrow ribs ; 

 there are a few spiral smaller threads on the short canal; aperture 

 narrow, pointed behind, with a short, wide canal in front; pillar 

 smooth, not callous, the anterior portion slightly twisted; outer lip 



