AOLIDA. 387 
united on low pedicels; and by the simple, non-perfoliated upper 
tentacula. Armature of the mouth as in Facelina, radula uni- 
serial, each plate crescent-shaped, with six to ten cuspids on 
either side; penis unarmed. 
Favorinus, Gray. . 
~ Distr.—F. albus, Alder (xci, 383). North Sea. 
Animal with slender cephalic tentacles knobbed at the extrem- 
ity ; oral tentacles two pairs; papille arranged in several oblique 
rows ; jaws denticulated ; dentition uniserial. 
Spuriiya, Bergh. 
Distr.—1 sp. Mediterranean. 
Rhinophores perfoliate; anterior angles of the foot almost 
rounded ; middle part of the jaw only, finely denticulated. 
CorYPHELLA, Gray. ) 
Distr.—18 sp. New England, Northern Europe. C. Lands- 
burgi, Alder (xci, 34). 
Rhinophores simple; angles of the foot produced; middle 
part of the jaw denticulated, lateral teeth of the radula minutely 
denticulated. 
Cautma, Alder and Hancock. 
Distr.—North Sea. C. glaucoides, A. and H. 
Animal sharply angular in front; foot broad; papillz simple 
and supported on cylindrical bases; tentacles small; jaws 
acutely toothed ; radula triseriate. 
Gatvina, Alder and Hancock. 
Distr.—North Sea. G. tricolor, Forbes. 
Rhinophores simple; papillz swollen in distant transverse 
rows; anterior angles of the foot rounded; middle part of the 
jaw strongly denticulated ; lateral teeth of the radula not den- 
ticulated. 
TRINCHESIA, Ihering. Near Galvina, but only one plate in each 
transverse row of the radula. Several species at Naples. 
CurnontA, Alder and Hancock. 
Distr.— C. nana, A. and H. North Sea. 
Animal with head naked and expanded ; papille clavate and 
arranged in thick-set rows. 
Hervia, Bergh. 
Distr.—1 sp. N. Europe. 
Rhinophores simple ; foot angularly produced in front; back 
papillary in oblique series; jaws with a single series of teeth ; 
‘radula uniserial, sparsely dentate... 
