28 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 66 



THRACIA QUENTINENSIS Dall 



Plate 11, fig. 1 



ThraciatQuentinensis Dall, West Amer. Scientist, vol. 19, No. 3, p. 21, 1921. 

 Pliocene (?) of San Quentin Bay, Lower California. U. S. Nat. Mus. Cat. Xo. 

 333112. 



TRICHODISCiNA VERDENSIS Dall 



Plate 23, figs. 7, 10, 12 



Epiphragmopliora {Trichodiscina) verdensls Dall, Nautilus, vol. 24, p. 35, 

 July, 1910. 

 Oaxaca, Mexico. U. S. Nat. Mus. Cat. No. 212318. 



TRITONALIA CIRCUMTEXTA Stearns 



Plate 25, fig. 4 



Ocineira circumtexta Stearns, Conch. Memo., No. 6, p. 1, 1871. 

 Santa Rosa Island, Calif. U. S. Nat. Mus. Cat. No. 59385. 



TROMINA UNICARINATA Philippi 



Plate 21, fig. 7 



Fusus unicarinatus Phillippi, Malak. Blatt., vol. 15, p. 223, 1868. 

 Troplion unicarinatus Tkyon, Man. Conch., vol. 2, p. 151, 1880. 

 Tromina unicarinata Dall, Proc. U. S. Nat. Mus. vol. 24, p. 536, 1902. 

 Magellan Straits, in 20 fathoms. U. S. Nat. Mus. Cat. No. 96193. 



TROPHON PINNATUS Dall 



Plate 22, fig. 5 



Trophon pinnatus Dall, Proc. U. S. Nat. Mus. vol. 24, p. 549, 1902. 



Magdalena Bay, Lower California, in 21 to 74 fathoms. U. S. Nat. Mus. 

 Cat. No. 124689. 



TURBO ASTERIOLA, new species 



Plate 36, figs. 1, 7 



Shell small, pinkish above, creamy white below, with a minute 

 depressed nucleus of 3 and 3 subsequent whorls ; suture distinct, not 

 appressed; spiral sculpture of, on the early whorls, 1; on the next 

 whorl, 2 ; and on the last whorl, 3 rows of small nodules, the largest 

 near the suture; these are followed at the periphery by a series ot 

 (on the last whorl 12) slender spines, and on the edge of tlie base by 

 a low nodulous keel; there is a minute row of pustules just behind the 

 pillar; there is practically no axial sculpture except faint lines of 

 growth ; the base is flattish, the aperture rounded but slightly angu- 

 lated by the sculpture ; the pillar is short, simple ; the operculum ex- 

 ternally granular; height of shell, 14; diameter, including spines, 

 20 mm. U. S. Nat. Mus. Cat. No. 205733. 



