78 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Type in United States National Museum, No. 123127. Type locality, 
U.S.S. “Albatross” Station 3414, southwest of Tehuantepec, in the Pacific 
in 2,232 fathoms. 
Range. Tillamook Bay, Oregon, to Tehuantepec, Mexico. 
This was described as Gemmula esurient var. pernodata. 
Cryptogemma calypso Dali, 1919 
Plate 3, fig. 3 
Proceedings of the United States National Museum, 56:31; PI. 9, fig. 8. 
Shell small, the nucleus always eroded, whitish with a dark dull 
olivaceous periostracum and about five remaining whorls; suture appressed, 
with a broad smooth ridge in front of it and behind the excavated anal 
fasciole; spiral sculpture in front of the shoulder of fine, even, close-set, 
equal threads, covering the surface, including the canal; axial sculpture 
of feeble incremental lines arcuate on the fasciole and antesutural ridge, 
also of narrow low sigmoid ribs beginning and forming a shoulder in 
front of the fasciole and obsolete in front of the periphery, differing in 
strength in different individuals and averaging fourteen on the last whorl; 
anal sulcus wide and deep, rounded; outer lip thin and sharp, much 
produced; inner lip with a thin layer of callus; pillar straight, short, 
obliquely attenuated in front; axis impervious; canal distinct, wide, hardly 
recurved. Height of (decollate) shell, 11; of last whorl, 7; diam., 4.7 mm. 
(Dali.) 
Type in United States National Museum, No. 214067. Type locality, 
Station 2923, off San Diego, California, in 822 fathoms. 
Range. Off San Diego, California, in 822 fathoms. 
Cryptogemma herilda Dali, 1908 
Bulletin , Museum of Comparative Zoology, 43:266. 
Shell rather small, stout, solid, chalky under an olivaceous periostra¬ 
cum; the spire longer than the aperture; whorls at least eight in the 
adult but usually much eroded; summit of the spire apparently blunt, the 
whorls in the young short in their axial dimension, giving a “chunky” 
aspect to the shell; early whorls with two beaded spiral series or cordons, 
one at the posterior suture, and another, larger, near the anterior suture. 
Between them is the anal fasciole; as the shell grows the anterior beaded 
cordon becomes situated nearer the center of the exposed whorl and (on 
the fourth whorl about twenty) the nodulations represent the posterior 
terminations of narrow very protractive axial riblets, which on the fifth 
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