14 
PAXILLUS, 
V,? Paxillus H. et A, Adams, 
De genere, cujus locus systematicus deficiente animalis 
et operculi (?) cognitione adhuc dubius remanet, conferatur 
Pfr • Mon. Helic. III. p. 585 et A. Adams in Proc. Zool. 
Soc. 1852. p. 93, ubi Helicidis adnumeratur, ut etiam in 
TVoodw. Man. II. p. 166. In recentissimo opere Cl. fratres 
ff. et A. Adams (Gen. rec. Moll. II. p. 288) Paxillum tain- 
quam subgenus Diplommatinae injunxerunt. — Species hucus- 
que unica : 
1. adirersus H- et A- Ad (Coll. 32 . — Pfr. 
in Maiak. Bl. 1855 . p. 185 . — Diplommatina 
advcrsa [Paxillus] Ad. Gen. p. 286 .) . . . Helic. III. p. 586. 
Subordo II. Ectophthalma. 
Pfr. Mon. Pneum. p. 14. — Gray Cat. Phan. p. 3. — 
P- et A. Adams Gen. rec. Moll. II. p. 273 : subordo Oper- 
culatorum. 
Familia V. Cyclostomacea. 
Pfr. Mon. Pneum. p. 14; Philippi Handb. d. Conch, 
p. 257 exclusis generibus pluribus. — Cyclophoridae Gray 
Fig. Moll. Anim. IV. p. 120 et Cat. Phan. p. 3; H. et A. 
Adams Gen. rec. Moll. II. p. 273. 
Subfam. I. Cyclotea. 
Operculum crassum, e duabus laminis compositum (exte- 
rior eplerumque calcarea, interiore cornea, ambabus sulco mar- 
ginali separatis), orbiculare, arctispirum, nucleo centrali. 
Cyclotina Gray Cat. Phan. p. 6. 
Cyclotinae H. et A. Adams Gen. rec. Moll. II. p. 274. 
Cyclotacea Trosck. Gebiss d. Schnecken p. 66. (inclusis Cyclophoreis 
et Pupineis). 
I. Cyclotus Guilding. 
Pfr. Mon. Pneum. p. 16 ; Gray Phan. p. 6 ; Wuodw. 
Man. p. 177 (subgenus Cyclophori) ; ' H. et A. Adams Gen! 
