wnish nucleus of a whorl and a half; varices 9 to 10, low, 
sharp spine at the shoulder; suture deep, the whorls almost se 
: ted, rounded; base rounded, imperforate; aperture short-ovate, 
; inner margin resting on the preceding varices, not touching 
op od ly of whorl; length 10.5, diameter 4 mm. San Miguel pigs 
a. , to Gulf of Cal. 
is eo 
21: 0282 Epitonium rectilaminatum Dall. (25 39). 
‘at Shell minute, whitish, with three polished blunt nuclear and 
by. our subsequent whorls; varices 18 or 19, low, uniform, straight, 
not continuous over the suture, with equal interspaces, sharp and 
ure rounded, slightly oblique. Length, 3.5; diameter, 1 mm. 
Bee erey Harbor, California, in 12 fathoms, to the Gulf of Cali- 
fornia. A quite similar but more rapidly increasing species is 
y found at the Galapagos Islands, in 634 fathoms, but the speci- 
~~ 
Br men is too immature to name. 
4 21: 0283 Epitonium eet Dall and Bartsch, 1910. Vancouver 
if Island 
 21:0284 Epitonium tabulatum Dall. San Pedro, Cal. 
_---—s- Shell slender, acute, thin, dull white, with two and ‘a half — 
smooth nuclear and 12 or more subsequent whorls; varices 16, 
- thin, sharp, well reflected, anteriorly striated, with a blunt angle 
at the shoulder, behind which the varix is somewhat concave, 
giving a tabulate profile to the whorls; varices more than half 
encircle spire, being continuous over spire; in perfect specimens | 
there is a very thin calcareous outer layer to the shell; base 
- pounded, aperture rounded, reflected margin narrow; length (of 
- decollate type) 18, diameter 7.5 mm.; entire length, if perfect, 
i? _ would be about 25 mm. It is a Crisposcala. South to the Coro- 
nado Islands, Baja Cal. 
ve 
_  21:0285 Epitonium appressicostatum Dall. Acapulco. 
is -21:0286 Epitoninm musidora Dall. San Diego, Cal.; Panama. 
et Shell thin, white, slender, with an acute spire and deep su- 
iorly smooth, continuing over the suture into which they dip, and 
- gubovate; a slight broadening of varix at shoulder of whorl, but 
no angulation; length 13, diameter 5 mm. 
4 21:0287 Epitonium columnella Dall. Panama Bay. 
_21:0288 Epitonium berryi Dall, 1907. (2538). Monterey—San 
Diego, Cal, 
a 21:0289 Epitonium habeli Dall. Galapagos Islands. 
: “This species completely bridges the gap between Asperiscala 
; and Nitidoscala.’’—Dall. 
4 
.  21:0290 Epitonium diegense Dall. S. Diego, Cal.; La Paz. 
; Shell minute, whitish, with 5 whorls exclusive of the (de- 
Shell small, ‘white, a cits 7 ee au a Petr ‘small 
‘Ds reflected, anteriorly axially striated, with a very small 2 
erect; without angle or spine; base rounded, imperforate; apert-_ 
ture; varices 10 or 11, low, thin, sharp, slightly reflected, anter- | 
make a nearly complete circuit of spire; base rounded, aperture — 
