4 PROCEEDINGS OF THE NATION Ali MUSEUM vol. 70 



the whorl on its earlier part, rising into prominent knobs on the 

 carina; on the latter part the ribs gradually become obsolete, but the 

 knobs become larger and more distantly spaced; beside these the 

 whole surface is covered with prominent close-set incremental lines 

 which give a striated aspect to it, especially on the knobs; the lumen 

 of the whorl is circular, but the aperture, by the prominence of the 

 carinae, has a quadrate appearance; maximum diameter, 5.5; minor 

 diameter, 4.2; height, 3.0 mm. U. S. Nat. Mus. Cat. No. 333708. 



Dredged by the late John B. Henderson, jr., in 16 fathoms off the 

 Tortugas, and near Miami, Fla., in 35 fathoms. 



The species is superficially much like L. acrilla Dall, but the minor 

 sculpture is different. There is no indication of a thickened peritreme 

 but the specimens maj^ be slightly immature. 



LIOTIA (LIPPISTES?) HUESONICA, new species 



Shell small, white, of about four and a third rapidly enlarging 

 whorls, the spu-e somewhat elevated and tabulate; suture distinct, 

 not deep; top of the whorls between the suture and the peripheral 

 carina somewhat flattened, as is the base between the verge of the 

 deep umbilicus and the anterior carina; spiral sculpture of (on the 

 periphery three) strong subequal imbricate carinae with nearly equal 

 interspaces, two of the carinae show on the spire, and on the j^ounger 

 whorls the imbrications become almost spinose; the early whorls are 

 crossed by close-set small riblets corresponding to the imbrications, 

 but on the base of the last whorl these become obsolete, reappearing 

 as strong crenulations on the rim of the umbilicus; other axial sculp- 

 ture of fine incremental oblique lines; aperture subcircular except as 

 modified by the ends of the carinae; height, 4.2; maximum diameter, 

 4.5 mm. U. S. Nat. Mus. Cat. No. 333710. 



Dredged by Henderson off Key West in 90 fathoms and off the 

 other Keys of Florida in 90 and 95 fathoms. 



Though not possessing the depressed spire so conspicuous in typical 

 Lippistes, the other characters are so closely related to that group 

 that it is doubtful if they should be separated. 



LIOTIA BRASILIANA. new species 



Shell small, solid, white, with radiating blotches of rose pink and 

 about four whorls, of which the earlier ones are subtabulate; suture 

 closely appressed; nucleus minute, smooth; spiral sculpture of (on 

 the periphery of the last whorl three) prominent crenulated cords 

 with a smaller thread in the interspaces, and three or four other minor 

 threads between the suture and the posterior major cord; on the base 

 the deep narrow umbilicus has a coarsely crenulate margin with four 

 equal crenulate minor threads between it and the anterior peripheral 

 cord; the aperture is circular with a thickened peristome somewhat 



