362 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 52 



vertical ; the outer similar but longer, beginning externally near the 

 carinal angle and extending backwarde obliquely about six milli- 

 meters; all these projections are, like the peristome, white; between 

 the two basal lamellae, slightly nearer the outer one and near its 

 inner end, is a thorn-like projection of a chocolate color, not con- 

 nected with either lamella, rapidly attenuated and bent forward 

 toward the aperture, the extreme end sharply recurved, white and 

 acute, like a cat's claw; maximum diameter of shell, 30.0; of peri- 

 stome, 16,0; of umbilicus, 5.0; minimum diameter of shell, 24.0; of 

 aperture, 9.0; altitude of shell, 6.0 mm. 



U. S. Nat. Museum no. 111,073. 



Two specimens were obtained. The remarkable armature seems 

 to be unique in the group. 



HELICINA HEIGHWAYANA, new species 

 Plate XXXVII, Figures 7, 8, 9 



Shell large, depressed, biconic, very sharply carinated, the carina 

 prominently rostrate at the peristome ; color pale lemon yellow fading 

 into creamy white, whorls about five; surface finely radially closely 

 striate, the striae somewhat wavy near the carina; nucleus small, 

 smooth; suture closely appressed ; periphery impressed just within 

 the carina, the remainder of the whorl moderately convex, above and 

 below ; base imperforate with a very small inconspicuous callus ; 

 aperture subtriangular, wider than high, the upper and basal mar- 

 gins thick, strongly reflected, but the callus not carried across the 

 body ; at the angle the thickened lip is strongly produced, rostrate, 

 and bent slightly forward with a faint channel internally ; operculum 

 lost. Maximum diameter of shell, 25.0; of aperture, 13.0; minimum 

 diameter of shell, 19.0; of aperture (vertical), 7.0; altitude of the 

 shell, 13.0 mm. 



One specimen was obtained with the preceding species. U. S. 

 Nat. Museum no. 111,074. 



This is the largest and most strongly rostrate species of the group 

 yet described. Its nearest relative seems to be H. rliynchostoina, of 

 the same region, which is much smaller, differently colored, and 

 with a polished surface. 



With these shells were found Apcrostoiiia gigantca Gray, in some 

 numbers, but a poor state of preservation. 



While traveling in the interior of the province of Bahia, Brazil, in 

 1908, Dr. J. C. Branner, vice-president of Stanford University, ob- 

 served that landshells, mostly dead, were remarkably abundant, 



