^OLID^. 887 



united on low pedicels, and by the simple, non-pertbliated 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, Grray. 



Distr. — F. albus, Alder (xci, 33). North Sea. 



Animal with slender cephalic tentacles knobbed at the extrem- 

 ity ; oral tentacles two pairs ; papillae arranged in several oblique 

 rows ; jaws denticulated ; dentition uniserial. 



Sptjrilla, Bergh. 

 Distr. — 1 sp. Mediterranean. 



Rhinophores perfoliate ; anterior angles of the foot almost 

 rounded ; middle part of the jaw only, finely denticulated. 



CoRYPHELLA, Gray. 



Diatr. — 18 sp. New England, Northern Europe. G. 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. 



Calma, Alder and Hancock. 



Dist?'. — North Sea. G. glaucoides^ A. and H. 



Animal sharply angular in front ; foot broad ; papillae simple 

 and supported on cylindrical bases; tentacles small; jaws 

 acutely toothed ; radula triseriate. 



Gal VINA, Alder and Hancock. 



Distr. — North Sea. G. tricolor .^ Forbes. 



Rhinophores simple ; papillae swollen in distant transverse 

 rows ; anterior angles of the foot rounded ; middle part of the 

 jaw strongl}?^ denticulated ; lateral teeth of the radula not den- 

 ticulated. 



TRINCHBSIA, Ihering. Near Galvina, but only one plate in each 

 transverse row of the radula. Several species at Naples. 



CuTHONiA, Alder and Hancock. 

 Distr. — G. nana, A. and H. North Sea. 



Animal with head naked and expanded ; papillae 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. 



