NO. 12 STRONG AND HERTLEIN : MARINE MOLLUSKS 191 



Gylichna veleronis Strong & Hertlein, new species 

 Plate 18, Fig. 3 



Shell ovately cylindrical, narrower toward the apical end, white, 

 with the spire immersed, leaving a shallow apical pit; aperture as long 

 as the shell; surface smooth except for about 25, slightly irregularly 

 spaced, deeply incised, spiral lines; outer lip starting from the apical 

 pit and rising slightly above the apex of the body whorl in a narrowly 

 rounded point, then slightly curved along the side of the shell, with 

 the basal portion rather efifuse; columella, narrow, sharp, not reflected 

 over the deep umbilical groove, nearly straight, with a slight fold at the 

 junction with the basal lip ; inner lip erased. The type measures : length, 

 4.9 mm; diameter, 2.3 mm. 



Holotype: No. 719 (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. Eleven additional specimens were 

 dredged at the same locality. 



This species differs from all the other west coast species placed in 

 the genus Cyliahna, in having wide-spaced, sharp, incised spiral lines 

 over the entire surface. 



This species is named for the motor cruiser Velero III, belonging 

 to Captain Allan Hancock of Los Angeles, California. It was during 

 an expedition on this cruiser that the junior author collected the speci- 

 mens described in this paper. 



Gylichna (Cylichnella) tabogaensis Strong & Hertlein, new species 



Plate 18, Fig. 4 



Shell, short cylindrical, white, with the spire immersed leaving a 

 shallow pit in the apex, aperture as long as the shell; surface sculptured 

 with 3 incised spiral lines near the apex, and, on the lower third of the 

 shell, a series of 12 similar incised spiral lines which become stronger 

 and closer spaced toward the umbilical region; outer lip rising slightly 

 above and rounding evenly into the apex of the last whorl without a 

 sinus, nearly straight along the side of the shell, and broadly rounded 

 at the base; columella twisted, with a spiral fold at its insertion and a 

 second fold at the junction with the basal lip. The type measures: 

 length, 3.00 mm; diameter, 1.6 mm. 



Holotype: No. 718 (Calif. Acad. Sci. Paleo. Type Coll.), from 

 Loc. 27,228 (C.A.S.), dredged in from 3 to 9 fms. off Taboga Island, 



