ART. 17 ILLUSTEATIONS OF TYPES OF SHELLS DALL 27 



SPISULA LONGA Dall 



Plate 10, fig. 1, plate 11, fig. 3 



Spisula loiiga Dall, West Amer. Scienti.-^t, vol. 19, No. 3, p. 22, 1921. 



Pliocene (?) of «aii Qiientiu Bay, Lower California. U. S. Nat. Mns.*Cat. No. 



333116. 



STHENORYTIS TOROENSE Dall 



Plate 18, fig. 5 



Epitonium {Sthcnorytis) torociu^e Dall, Smithsonian Misc. Coll., vol. 59, p. 

 6, 1912. 

 Pliocene of Toro Point, Canal Zone, Panama. U. S. Nat. Mus. Cat. No. 



214340. 



STROMBINA LILACINA Dall 



Plate 35, fig. 5 



Stromhina Ulacina Dall, Nautilus, vol. 30, p. 28, 1916. 

 Gulf of California. U. S. Nat. Mus. Cat. No. 219764. 



SUAVODRILLIA SAGAMIANA. new species 



Plate 21, fig. 2 



Shell large, solid, biconic, grayish white, with 8 whorls exclusive 

 of the (lost) nucleus; suture closely appressed, the anal fasciole in 

 front of it incrementally striated and slightly constricted; spiral 

 sculpture of a strong axially wrinkled cord forming the anterior 

 boundary of the fasciole, and in front of the cord numerous in- 

 conspicuous threads with equal or narrower interspaces extending to 

 the end of the canal; axial sculpture only of incremental lines, 

 emphasized on the ridges at the suture and shoulder; aperture 

 ample, anal sulcus wide, outer lip sharp and arcuately produced, 

 body erased, throat smooth, pillar attenuated, canal short and wide ; 

 height of shell, 37 ; of last whorl, 25 ; diameter, 15 mm. U. S. Nat. 

 Mus. Cat. No. 110780. 



Dredged by the United States Bureau of Fisheries steamer 

 Albatross at station 5088, in 369 fathoms, mud, off Hondo in Sagami 

 Bay, bottom temperature 41.8° F. 



This is larger and stouter than S. hennicottu Dall. of Alaska, but 

 of the same general type. 



TEREBRA CONCAVA Say 



Plate 9, fig. 8 



Turritella concava Say, .Tonrn. Acad. Nat. Sci. Phila., vol. 5, p. 207, P'eb. 1826. 

 Charleston, S. C. U. S. Nat. Mus. Cat. No. 87155. 



TEREBRATALIA LATA Dall 



Plate 13, figs. 1, 2 



TcrehrataUa lata Dall, West Amer. Scientist, vol. 19, p. 18, 1921. 

 Pliocene (?) of San Quentin Bay, Lower California. U. S. Nat. Mus. Cat. No 

 333150. 



