21:0234 Epitonium (Acirsa) exopleura Dall. Cape San Lucas. 
21:02335 Epitonium (Acirsa) menesthoides Cpr. 1864. Gulf Cal. 
21:0236 FERMINOSCALA Dall, 1908. Subgenus Epitonium. 
Contains large yellow or brown species with finely reticu- 
lated surface, large basal disk, and a thick heavy terminal varix; 
before the varix is formed it has much the aspect of Amaea Mag- 
nifica Sby. 
21:0237 Epitonium (Ferminoscala) ferminisianum Dall, 1908. 
Point Fermin, Gulf of California, to Panama. 
21:0238 Epitonium (Ferminoscala) brunneopictum Dall, 1908. 
Off Cedros Island. 
21:0239 Epitonium (Ferminoscala) pompholyx Dall, 1889. 
Cape San Lucas, to Galapagos Islands, in deep water. 
21:0240 ASPERISCALA De Boury, 1909. Subgenus Epitonium 
Type Scalaria bellastriata Cpr. 
21:0241 Epitonium (Asperiscala) bellastriata Cpr. 1864. (1054, 
192). 
Has 15-16 varices and clean-cut spiral sculpture. 
Monterey, to San Diego, Cal. 
21:0242 Epitonium (Asperiscala) lowei Dall, 1906. (2533). 
21:0243 Epitonium (Asperiscala) acapulcanum Dall. La Paz—~ 
Acapulco. 
21:0244 Epitonium cookeanum Dall. San Diego, Cal. 
Shell small, pink, solid, acute, imperforate, nucleus lost, 
with 8 well rounded subsequent whorls; with 10 rather solid, 
smooth continuous white varices making less than half a turn 
round the spire; spiral sculpture of extremely fine uniform threads 
covering the whorl between the varices; the terminal varix thicker 
than the others; all the varices broader at the intersection with 
the suture but not spinose; length 9.5, diameter 4 mm. Ranges 
to Gulf of California. Named in honor of Miss J. M. Cooke, of 
San Diego, Cal. 
21:0245 Epitonium xantusi Dall. Cape San Lucas—La Paz. 
21:0246 Epitonium arnoldi Dall. San Pedro, Cal. 
Shell of moderate size, white, thin, with 8 well-rounded 
whorls exclusive of the (lost) nucleus; varices on the last whorl 
13, on the first 4 whorls they are feeble, on the next 2 distinct 
and crowded, on the last 2 more distinctly spaced, low and cord- 
like; spiral sculpture of extremely fine close-set striae; terminal 
varix not enlarged, the varices not continuous over the suture 
nor enlarged or spinose; aperture obliquely ovoid; length 14, 
diameter 5.5 mm. Named for Delos Arnold. 
21:0247 Epitonium pacis Dall. La Paz, 
21:0258 Epitonium emydonesus Dall. Galapagos Islands. 
21:0249 Epitonium imperforatum Dall. La Paz. 
