190 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 2 



Notes and Descriptions of New Species 



Volvulella lowei Strong & Hertlein 

 Plate 18, Fig. 1 



Volvulella lowei Strong & Hertlein, Proc. Calif. Acad. Sci., ser. 4, vol. 



22, no. 6, December 31, 1937, p. 164, pi. 35, fig. 2. "Puerto 



Escondido, Gulf of California." 



Hypotype: No. 759 (Calif. Acad. Sci. Paleo. Type Coll.), from 



Loc. 27,229 (C.A.S.), dredged in from 3 to 9 fms. in Bahia Honda, 



Panama. L. G. Hertlein collector. Eight additional specimens were 



dredged at the same locality. 



This species differs from the other west coast species of this genus 

 in the much more distinct spiral sculpture. 



Gylichna stephensae Strong & Hertlein, new species 

 Plate 18, Figs, 2, 5 



Shell ovate cylindrical, translucent white, shining, with the spire 

 immersed, leaving a minute perforation in the rather deep apical pit; 

 aperture as long as the shell; entire surface sculptured with fine, incised, 

 spiral lines which are rendered slightly wavy by the rather prominent 

 lines of growth ; outer lip starting from the apical pit and rising slightly 

 above the apex of the body whorl in a semicircle, then evenly curved 

 along the side of the shell, and rather narrowly rounded at the base; 

 columella partly reflected over the narrow umbilical groove, slightly 

 twisted with a moderate fold at the junction with the basal lip; inner 

 lip erased. The type measures: length, 6.7 mm; diameter, 3.2 mm. 



Holotype: No. 717 (Calif. Acad. Sci. Paleo. Type Coll.), from 

 Loc. 27,229 (C.A.S.), dredged in from 3 to 9 fms. in Bahia Honda, 

 Panama. L. G. Hertlein collector. Twenty-six additional specimens 

 were dredged at the same locality. 



The species resembles Cylichna jantasma Baker & Hanna-- more 

 closely than any other west coast species but is smaller, proportionally 

 broader, and has more uniform spiral sculpture. 



This species is named for Mrs. Kate Stephens, Curator Emeritus 

 of mollusks at the San Diego Society of Natural History. 



22 Cylichnella fantasma Baker & Hanna, Proc. Calif. Acad. Sci., ser. 4, 

 vol. 16, no. 5, 1927, p. 128, pi. 4, fig. 6. "Isthmus Bay, Espiritu Santo Island, 

 Gulf of California." 



