THE SV AIR SHA“SHEELS 189 
Amphissa undata, Cpr., the 
Wavy Amphissa, Figure 192. 
This species also has been con- 
founded with A. versicolor, but 
it is really quite distinct, 
though of about the same size. 
The figure is much magnified, 
and the color pattern is ig 
nored. It has been found 
plentifully in mud off Catalina 
Island in 16 fathoms of water. 
Amphissa bicolor, Dall, the 
Two-tinted Amphissa, Figure 
193. The shell is 14mm. in 
length, and is of a pale straw 
color, with 
Fig. 192, x (*) 
a brownish base 
and a brown band. Specimens 
Fig 193, x # (*) 
were dredged in various places 
off the coast of southern Cali- 
fornia, in quite deep water. 
We now come to the great 
family of the Muricidae, in the 
shells of which the whorls are 
convex, and are crossed by 
three or more continuous vari- 
ees. The aperture ends in a 
eanal, which is generally 
partly closed. In warmer waters, like those of the 
tropical oceans, the members of the Murex family 
take on bright colors, and assume finer forms. 
With us they are more modest, though many of 
them are full of interest. 
