CLASS GASTROPODA 
79 
whorl fade out on the base; the anal fasciole is conspicuously marked with 
arcuate, close, fine ripples; in front of the shoulder in the young the whole 
base of the shell and canal are covered with close, fine, spiral threads, 
which, as the shell grows older, appear also on the anal fasciole; on the 
other hand, in the older shells the nodular band next the suture and that 
at the periphery become less prominently sculptured and the ribs almost 
obsolete; aperture and canal short and wide; pillar with little callus, 
straight, solid; outer lip produced, thin, sharp, simple; anal sulcus wide, 
shallow, in the older shells nearly reaching the suture. Length of shell, 
about 18; of last whorl, 11.5; of aperture, 8; maximum diameter, 7 mm. 
(Dali.) 
Type in United States National Museum, No. 123091. Type locality, 
U.S.S. “Albatross” Station 3360, Gulf of Panama, in 1,672 fathoms. 
Range. Santa Barbara, California, to Panama. 
This was described as Gemmula herilda by Dali. 
Cryptogemma cymothoe Dali, 1919 
Proceedings of the United States National Museum, 56:31; PI. 9, fig. 3. 
Shell much resembling the preceding species (C. herilda ), from which 
it differs by having the anal fasciole striated spirally, the surface in front 
of the shoulder without spiral sculpture and minutely vermiculate, the 
ribs more knob-like, shorter, and averaging about 12 on the last whorl; 
whorls about six in number, the apex always eroded. Height of (decol¬ 
late) shell, 9; of last whorl, 6.5; diameter, 5 mm. (Dali.) 
Type in United States National Museum, No. 214067a. Type locality, 
Station 2923; off San Diego, California, in 822 fathoms. 
Range. Santa Barbara Islands to San Diego, California, in deep 
water. 
Cryptogemma polycaste Dali, 1919 
Proceedings of the United States National Museum, 56:30; PI. 9, figs. 4, ?. 
Shell white, with a pale olivaceous periostracum, and five whorls exclu¬ 
sive of the (lost) nucleus, rather slender and moderately rounded except 
for a single strong peripheral keel which marks the deepest part of the anal 
sulcus; suture distinct, not appressed, with a feebly indicated flattish area 
between it and the posterior edge of the anal fasciole, which between the 
keel and the flattening is slightly impressed; there is no other spiral sculp¬ 
ture, and the axial sculpture consists mostly of moderately prominent in¬ 
cremental lines; anal sulcus deep and wide; outer lip thin, prominently 
arcuately produced; inner lip smooth, pillar very short, gyrate; axis 
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