344 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 53. 



STROMBIFORMIS BARTHELOWI, new species. 



Plate47, fig. 7. 



Shell polished, acicular, uniformly pale brown. Early whorls weU 

 rounded, separated by a constricted suture; the succeeding turns 

 fiat, with a less conspicuous suture, marked by very fine vertical Unes 

 of growth only. Periphery of the last whorl well rounded. Base 

 rather long, evenly rounded. Aperture very elongate-ovate; poste- 

 rior angle acute; outer lip thin, not protrated in the middle; inner hp 

 slender, slightly curved, reflected over and appressed to the base 

 throughout its entire length; parietal wall glazed with a thin callus. 



The type (Cat. No. 268622, U.S.N.M.) was collected by the author 

 in Santa Maria Bay, Lower California. It has eleven whorls and 

 measures — length, 5 mm.; diameter, 1.3 mm. Cat, No. 267746, 

 U.S.N.M,, contains another specimen dredged by the author in shal- 

 low water in the same place. 



STROMBIFORMIS HEMPHILLI, new species. 



Plate 47, fig. 4. 



Shell poUshed, the three or four early whorls increasing slowly in 

 size, the rest more rapidly, which lends the outline of the spire a 

 somewhat constricted appearance near the summit. Early whorls 

 well roimded, with moderately impressed suture. The whorls are 

 marked with irregular, triangularly shaped streaks of brown, which are 

 broadest at the varicial streaks and taper backward to a point, one 

 side following the summit. Base marked by an interrupted brown 

 band, situated a httle anterior to the periphery, and the second, 

 shghtly narrower, about one-third the distance between the peripheral 

 band and tip of the base, anterior to the peripheral band. The 

 extreme tip of the inner hp is brown. Early whorls moderately 

 rounded, separated by an impressed suture, the later ones very 

 shghtly rounded, separated by an inconspicuous suture, marked by 

 exceedingly fine hnes of growth and occasional varicial streaks. 

 Periphery of the last whorl feebly rounded. Base moderately long, 

 weU rounded. Aperture rather small, ovate; posterior angle acute; 

 outer hp thin; inner lip very oblique, somewhat sinuous, slightly 

 reflected with posterior portion appressed to the base; parietal wall 

 covered by a thick callus. 



The type and three specimens of this species (Cat, No. 127554, 

 U.S.N.M.) were collected by Mr. Henr^'' Hemphill in shell drift, at 

 Point Abreojos, Lower California. The type has 9 whorls antl 

 measures — ^length, 3.1 mm.; diameter, 1.1 mm. 



