92 SHELL GALLERY. 
The genera Boltenia and Culeolns include species in which the 
body is attached to a peduncle. 
The large exhibited specimen of Boltenia pachydermatina is 28 
inches in length, the head being 4 and the stalk 24 inches long. 
The two four-lobed apertures are along one edge, the branchial 
being the lower ; the body is marked with long deep furrows, and 
the stalk with transverse wrinkles. Culeolns perlucidus, from 1600 
fathoms in the Southern Ocean, is in the form of a small pear- 
shaped head on a slender stalk, the total length being 4| inches. 
The branchial orifice forms a transverse slit with raised lips near the 
stalk, the slit-like atrial orifice being near the rounded end of the 
body. Culeolns moseleyi, another slender-stalked form, was obtained 
from 2425 fathoms in the Central Pacific. 
The little Cynthiid Styelopsis grossularia (Fig. 11), popularly 
known as the " Currant Squirter," occurs in the form of bright red 
hemispherical blobs on stones and shells ; when undisturbed, the 
Fig. 11. 
A. Styelopsis grossularia on shell. B. Tadpoles of same, x 9. 
a, branchial ; b, atrial orifice. (B, after Sir J. Daly ell.) 
branchial and atrial orifices expand and project upwards. The eggs 
are brilliant red in colour. Sir John Daly ell was the first to discover 
the tadpole form, which is about T V inch long (Fig. 11, B), and to 
