406 MAZATLAN UNIVALVES 
operculum is externally deeply concave; inside simple. The 
largest specimen is only 1°1 long. One with elevated spire 
measures long. 1°02, long. spor. °14, lat. °63, div. 128°. 
A flattened sp. LO, a 400;,-. 253" (Os eens: 
Hab.—Galapagos, Cuming.—Taboga, 2 sp. C. B. Adams.— 
Mazatlan ; extremely rare ; L’pool Col. 
Tablet 1944 contains 2 sp. normal, and an operculum.—1945, 
2 sp. distorted. ' 
482. Conus ?scanaRis,. Val. 
Ree. Obs. Humb. & Bonpl. vol. ii. p. 338.—Kien. Icon. Conch. 
p. 158, no. 133, pl. 88, f, 5. 
Tablet 1946 contains a rubbed small specimen, °54 in lenette 
which perhaps belongs to this species. 
Hab.—Acapulco, Valenciennes.—? Mazatlan ; 1 dead sp. L’pool 
Col. 
483. PP Conus —, sp. ind. 
7 
Tablet 1947 contains the spiral part of a thin shell with 4 
smooth rounded nuclear whirls, rather projecting, and 4 flat- 
tened projecting normal whirls, spotted with purple brown ; 
smooth, with raised, somewhat nodose bands on each side of 
the suture. It may possibly belong to Pyrella, Swains. 
[=Tudicla (Bolt.), H § A. Ad. vol.i. p. 151.] 
Tablet 1948 contains the distorted operculum of a Conus, of 
concentric elements, with one end elongated. 
SusorpER PROBOSCIDIFERA. 
Famity SOLARIADZ. 
The shells of this family have the nuclear whirls slanting 
and sunken, as pointed out by Woodward. The shape agrees 
in Solarium, Torinia and Bifrontia. In Philippia, Gray, the 
nucleus has the same character, but is larger in proportion, 
more globular, with one conspicuous whirl. <A similar differ- 
ence obtains between Chemnitzia and Odostomia in Pyramidel- 
