CLASS GASTROPODA 
69 
of (about 11) slightly oblique somewhat flexuous ribs, obsolete below the 
periphery and upon the anal fasciole, sharpest on the earlier whorls. 
Spiral sculpture of coarse, sometimes nearly obsolete threads, most obvious 
below the periphery; whorls nine, the nucleus lost in the specimen; 
aperture short, wide, with a deep wide notch leaving a wide fasciole, a 
callous lump above the notch on the body, and a rather strong whitish 
callus, externally brown-edged, on die pillar; siphonal notch wide with a 
marked fasciole, the canal slightly recurved. Long, of shell, 31; of last 
whorl, 16; of aperture, 10; max. diam., 10 mm. (Dali.) 
Type in Oldroyd Collection, Stanford University, No. 434. Type 
locality, off San Pedro, California, in deep water. 
Range. San Pedro to San Diego, California. 
Cymatosyrinx hemphilli Stearns, 1871 
Proceedings of the California Academy of Sciences, 5:80; PI. 1, fig. 3. 
Shell small, smooth, slender, polished; spire long, subacute, rounded at 
apex; longitudinally marked with inconspicuous, oblique ribs, which are 
nearly obsolete on the body whorl; number of whorls seven, with well- 
defined sutural and just below it a parallel impressed thread-like line; shell 
of an opaque dingy horn color; incremental lines fine, marked in some 
specimens with dingy white; mouth obliquely ovate, about one-third the 
length of the shell; labrum produced, anteriorly somewhat thickened; 
sinus sutural, deep calloused; columella thickened at base; canal very 
short, somewhat produced and twisted; one specimen shows obscure, re¬ 
volving, impressed lines below the swell of the body whorl; size quite 
uniform. Long., .26; lat., .09 in. (Stearns.) 
Type in United States National Museum. Type locality, Todos Santos 
Bay, Lower California. 
Range. Santa Barbara, California, to Gulf of California. 
Cymatosyrinx halocydne Dali, 1919 
Plate 19, fig. 5 
Proceedings of the United Slates National Museum, 56:11; PI. 4, fig. 4. 
Shell slender, acute, rather flat-sided, purplish-brown usually more or 
less obscured by a yellowish-wliite glaze; nucleus with the first turn 
smooth, inflated, the second has a peripheral keel and is followed by about 
eight and a half subsequent whorls; suture strongly appressed with a 
smooth, narrow band in front of it and behind the somewhat constricted 
fasciole; other spiral sculpture of sharply incised lines, four or five on the 
spire between the sutures, equal and with wider equal-rounded interspaces, 
[ 69 ] 
