334 DR. O. BOETTGER ON NEW CLAUSILl^. [May 1, 



propior. — T. vix rimata, subclavato-fusiformis, opaca, calcareo- 

 alba, in interstitiis costularum hie illic cinerea, apice nigra. 

 Anfr. ca. 12 vix convexiuscuK, sutura Ixvi crenata disjuncti, 

 dense valideque undulato-costulati, costulis scepe sursum bijidis, 

 interstitiis verticaliter substriatis ; ultimas parum attenuatus, vix 

 validius et ceque ac cceteri costulatus, costulis ad suturatn plerum- 

 que bijidis, basi distincte ancjuste sulcatus, obsolete bicristatus, 

 crista inferiore distinctiore striis densis ornata. Apert. ampla, 

 late oblonga, basi valde recedens, intus fusco-castanea, perist. 

 albo. Apparatus claustralis lamellceque valde aff. C. tereti, 

 Oliv., lunella obsolefa, apice clausilii corrotutidato. Alt. ca. 

 21, lat. 4| mm. ; alt. apert. 4g, lat. apert. 3j mm. 

 Hab. Zakro?, east of Crete QSpratt). 



One of the most difficult forms of the island of Crete. It looks 

 nearly like certain forms of C. corruyata, Drap., var. inflata, Oliv., 

 from Candia ; hut the shape of the neck, the receding base of the 

 mouth, and the deep brown colour of its interior shows that we must 

 search for its allies amongst C. teres, OHv., and O. retusa, Oliv. 

 The form of the neck and also the mouth and the apparatus claus- 

 tralis being very analogous to those of C. retusa, I think it best 

 to place it between this species and C. vesti of the olivieri-teres 

 group. 



25. Clausilia vesti, n. sp. (Plate XXXIV. fig. 11.) 



Quasi intermedia inter C. corrugatum, Drap., f. epimenides, 

 Blanc, et C. teretem, Oliv., sed huic magis affinis. — Differt a 

 C. tereti, Oliv,, t. tota valide costulata. Anfr. la jjlanissimi, 

 sutura suhmarginata disjuncti, exceptis apiculihus costulati, 

 costulis validis, rectis, striclis (30 in anfr. pemdtimo), inter- 

 stitiis spiraliter substriatis ; idtiinus distantius validiusque costu- 

 latus, costulis pp. 20, ante aperturam altioribus,undulatis, sursum 

 hie illic dichotomis, basi parum distincte breviter subbicristatus, 

 crista umhilicali pliculis sat validis crenata. Apert. C. teretis, 

 Oliv., sed lam. supera longa nee punctiformis, infera minus 

 distincte bifurcata. Cceterum huic speciei simillima. Alt. 27 i, 

 lat. 4^ mm. ; alt. apert. 5i, lat. apert. 3| m7n. 

 Hab. Sitia Bay, N.E. of Cret~e (Spratt). 



This fine form, which 1 name in honour of Herr von Vest of 

 liermannstadt, Transylvania, author of an important and very 

 interesting paper on the classification of this genus, is perhaps only a 

 variety of C. teres, Oliv. ; but because intermediate stages of sculp- 

 ture are wanting between these two shells, and differences also 

 exist in the form of the neck and of the lamellse, I have thought 

 it better to create a new species for it. C. corrugata, Drap., 

 var. inflata, Oliv., in its beautiful large local form epimenides, 

 Blanc, which inh.nbits the S])inaluuga peninsula, is, on the other hand, 

 a nearly allied shell ; but its ventricose form, the different costulation of 

 the neck, the largeness and different position of the inferior lamella, 

 and the absence of the small superior palatal plait will easily distinguish 

 the two species. 



