384 SOLID A. 
trumpet-shaped sheaths; veil small, simple; gills ovate, muri- 
cated, in single series down on each side of the back ; lingual 
membrane slender, with above 100 recurved, denticulated teeth, 
in single series ; foot very narrow. 
The stomach is ramified, and the liver is entirely contained in 
the dorsal processes, which fall off readily when the animal i is 
handled, and are soon renewed. 
GELLINA, Gray. Head simple; papille or gills smooth. Ds 
affinis, @Orb. (xci, 27). North Sea. 
DOTILLA, Bergh. Distinet from Doto by three rows of plates 
in the radula. 
Hero, Loven. 
Syn.—Cleelia, Lovén. Distr.—H. formosa, Lov. 
Animal with no mantle; tentacles two, linear, simple, non- 
retractile ; veil plain, produced at the sides, gills branched or 
umbellated. Tongue with a large central denticulated spine, 
and two simple lateral spines. Jaws corneous. 
HeERomorpHA, Bergh. 
Distr.— H. Antillensis, Bergh. West Indies. 
Agreeing with Hero in the general structure of the head and 
especially of the tentacles, but with cup-shaped rhinophores, of 
which the club is simple; also closely allied to Doto, but with 
simple papille. 
Famity AOLID &. 
Animal with papillose gills, arranged along the sides of the 
back ; tentacles subulate, sheathless, non-retractile ; lingual teeth 
01:0; jaws horny; ramifications of the stomach and_ liver 
extending into the dorsal papille ; excretory orifices on the right 
side ; skin smooth, without spicula ; no distinct mantle. 
SuspramMity GLAUCINA. 
Branchiz papillose, in groups ; foot rudimentary. 
GLaucws, Forster. 
EHtym.— Glaucus, a sea-deity. 
Syn.—Pleuropus, Raf. Eucharis, Peron. 
Distr.—7 sp. Atlantic, Pacific. Found on floating sea-weed; 
devours small sea-jellies, Porpitze and Velella.—BENNET. G. 
radiatus, d’Orb. (xci, 28). 
Animal elongated, slender; foot. linear, channeled ;- tentacles 
four, conical ; jaws horny; teeth in single series, arched. and 
pectinated ; gills slender, cylindrical, supported .on-three. pairs. 
of lateral lobes ; stomach giving off large ceca to the tail and 
side-lobes; liver contained in the papille ; sexual orifice beneath 
first dextral aun: vent behind second papilla; sparen ina close - 
spiral coil. : 
o2un FS 
