CLASS GASTROPODA 
37 
curved, nine on the penultimate, eight on the last whorl, and extending 
from the suture to the base; spiral sculpture of extremely close, fine stria- 
tion on the whorls above the base and in front of the shoulder; aperture 
semilunate, body erased, pillar long and attenuated; canal long, slender, 
slightly curved. Height of shell, 16; of last whorl, 12; of aperture and 
canal, 9 ; diameter, 6 mm. (Dali.) 
Type in United States National Museum, No. 209914. Type locality, 
United States Fish Commission Station 4356, off Point Loma, California, 
in 120 to 131 fathoms. 
Range. Monterey to San Diego, California. 
Trophon macouni Dali, 1910 
Canada, Department of Mines, Geological Survey Branch, Memoir No. 14-N ; PI. 1, 
fig. 7. 
Shell small, dark purple, with the prominences white. Whorls about 
six, the nuclear smooth and submammillary; the succeeding whorls with 
(on the last, nine) prominent, thin, sharp varices, sharply angulated at 
the shoulder; whorls subtabulate, the suture distinct but not deep; sculpture 
(beside the varices) of two to seven, low, revolving, flat ridges which ap¬ 
pear whitish against the purple ground-color, and numerous fine, spiral, 
almost microscopic lines often obsolete; besides the angle at the shoulder 
there are usually two of these ridges on the spire behind the last whorl; 
they hardly modify the varices; aperture small, subovate, with the outer lip 
somewhat expanded; canal white, rather long and narrow, directed some¬ 
what toward the left. Height of shell, 13.0; of the last whorl, 9.0; max. 
diam., 6.0 mm. (Dali.) 
Type in Ottawa. Type locality, the ship channel, Barkley Sound, Van¬ 
couver Island, British Columbia. 
Range. Port Althorp, Alaska, to Barkley Sound, British Columbia. 
Trophon orpheus Gould, 1849 
Plate 30, fig. 14 
Proceedings of the Boston Society of Natural History , 3:142. 
Testa parva, elongata, cinerea; spira turrita, anfractibus sex superne 
angulatis, lamellis acutis longitudinalibus muricatis et filis transversis 
cinctis; anfractu ultimo postice ventricoso, antrorsum in rostrum vix re- 
flexum attenuato; apertura elliptica, dimidiam longitudinis testae, postice 
angulata; labro acuto; columella antice intrudente; fauce carnicolori. 
Long., y 2 ; lat., % poll. (Gould.) 
Shell minute, fusiform, thin, elongated, turreted, cinerous with nu¬ 
merous longitudinal, lamellar sharp, muricated ridges, thirteen on the last 
whorl, angular near the suture, crossed by rounded raised threads of con- 
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