114 Mr. R. T. Lowe on new Species of Cyclostoma. 



XX. — The Cyclostomas of Madeira belonging to the Genus Cras- 

 pedopoma of Pfeiffer : with Descriptions of Four new Madeiran 

 and One new Canarian Species. By R. T. Lowe, M.A. 



1. C. lucidum, Lowe. 



T. globoso-conoidea abbreviato-obesiuscula laeviuscula nitida solidi- 

 uscula obsoletissime angulato-carinata v. ecarinata subimperforata 

 S. rima angustissima strictissima v. fere clausa ; spira abbreviata, 

 anfr. subtumido-convexis transverse inrequaliter substriatis, ali- 

 quando indistincte creberrime hinc inde transverse subtilissime 

 striatis spiraliterque obsoletissime striolatis, ultimo majore latiore 

 ventricoso, sutura valde impressa ; apertura spiram fere sequante. 

 —Prim. 66 ; Catal. Moll. Mad. in Proceed. Zool. Soc. 1854, 21G ; 

 Pf. Mon. Pneum. 51.n°.88. 



a. polita ; lsevissima nitidissima plerumque major, striolis trans- 

 versis insequalibus exoletis, spiralibus nullis. — Prim. I. c. t. 6. 

 f. 40 ; Kiist. Mart, et Chemn. t. 13. ff. 26, 27. 



Long. 6^-6|, diam. 6-5f mill. ; apert. 3, spira 4 longa ; anfr. 4^-5. 



p. rustica ; sericeo-nitens paulo plerumque minor, striolis trans- 



versis creberrimis subtilissimis distinctiusculis, spiralibus exoletis- 



simis obscuris paucis hinc inde obsoletissime punctulatim subde- 



cussata. 



Long. 5-6, diam. 5^-5^ mill. ; apert. 3, spira 3 longa ; anfr. 4^-5. 



Hob. in Maderse declivibus sylvaticis dumosisve rupibusve hu- 



midis supra 1500 ped. ubique recens, necnon fossilis ad Canical, 



/3 vulg., a rara. Neque in Portu S t0 neque in Desertis recens fossilisve 



occurrit ; exemplar enim unicum Porto-sanctanum, ex quo in Catal. 



Moll. Mad. L c. C. lucidum " In Portu S t0 tantum fossile rariss." 



dicitur, ad C.favescens v. Neritoides procul dubio potius spectat. 



In Canariis etiam C. lucidum omnino deest. 



Extremely variable in colour : either dark olivaceous approach- 

 iug to greenish black, chestnut, or coffee-brown of various in- 

 tensity, with often a single light band on the last volution, or 

 light-yellowish straw or olive horn-colour ; and either plain, or 

 varied with dark bottle-green or light yellowish spiral lines or 

 longitudinal stripes or strigse. 



It is also variable in the prominency of the angle of the last 

 volution, which is, however, mostly altogether obsolete or evan- 

 escent. 



Traces of a few faint, obsolete, irregular, spiral stria3 are 

 usually discernible in /3 below the suture, on the last volution, 

 towards the peristome, or in the neighbourhood of the umbilical 

 cleft. Opercle reddish chestnut. 



wary, distinct from C. galeatus, and apparently of this species, has just 

 been received by the Zoological Society of Amsterdam. Another new 

 species has recently been described in the Proceedings of the Zoological 

 Society of London (I860, pp. 211 & 250), from a bird in their Gardens, 

 under the name C, bicarunculatus, making the fifth of the group. — P. L. S. 



