M8BOIA. 



three or four spiral scries of pits; aperture expanded In-low, lip di- 

 lated, varicose : whitish or yellowish, often Mrigatc with chestnut, 

 varix >mctinics three-spotted with chestnut. Length, 7'U mill. 



Readily distinguished by IN Clausilia-liUe appearance. The 

 synonyms are A'. in<irt/!init<i, LasUcv. A', arnln, Desm., /.'. ncifufn. 

 Desm., K. Driunintmdi, Leach, 7i'. />u/<-li< /f<i, Risso, R.latilabre,J&D 9 

 and var. (.rjninxitunri*, P>uc<j., Dautx... Dollf. 



R. SlSMONlHANA. Issel. PI. (J7, lig. W. 



Imperforate, thin, whitish, a little shining; longitudinally densely 

 costulate, the interstices minutely spirally striate : whorls l, slightly 

 CODV6Z, sutun- margined ; lip acute. J.en^th, *2'~) mill. 



Section TURBELLA, Leach. 1847. 



I{. PABVA, DaCosta. PL 62, figs. 4U-4-S. 



Uaiher solid, smooth, shining, white or yellowish, variously 

 clouded and irregularly handed with fulvous; with narrow, suh- 

 distant longitudinal rounded ribs, terminating abruptly on the 

 middle of the body whorl, the intervals spirally striate ; lip with a 

 white varix, lu-aring two fulvous spot-. Length, 4 - :J mill. 



Europe. 



The synonyms are Turin <itbnfn*, cereus and subluteus, Adams, 

 R. cerii.*iit'i, Urusiiia. A', nlwurn. Thil., It. xriuicnttulutit. Anton. 



Ix. INTI:I;I;I in A. Adams. PI. (i li-js. V.), 50. 



Thin, nearly ]>ellucid, .-niooth, somewhat shining, with two inter- 

 rupted irregular chestnut bands and intermediate chestnut llanie-. 

 lip maculate with chestnut. Length. 4'.'} mill. 



Europe. 



Iy some authors considered a variety of A', /mri'ii. It i- A*. 

 i. Keclll/. 



II. DOLD M. N\-i. PI. C-J, fig. 51, 



Hyaline, shining, whorls .">, rapidly increasing, with deep >uture, 

 with 14 plic;e and intermediate >ulcatioii>, abruptedly terminating 

 on the periphery of the last whorl; lip scarcely varic< 



Length, I'-: 1 , mill. 



M< t/iti n 



It is /,'. ftu.-<!f/ii and /,'. mni'i, Phil.. A'. /ni/chrn. 



