990 



Cette espece, dit-il, est peut-etre une coquüle ä Fetat de jeune äge. II est donc 

 sage de rejeter cette forme, qui, en somme, ne ressemble nuUement au Oyclostoma 

 clathratulum de Sowerby et de L. Pfeiffer. 



Gr. Austen unterscheidet eine var. minor, doch ohne sie abzubilden; er sagt 

 über sie: Shell closely umbilicated, very globosely turbinate, solid, polished, sculp- 

 ture regulär spiral ribbing, crossed by fine transverse irregulär costulation; colour 

 white, one specimen dark grey on the apex; spire conoid, apex blunt, and smooth 

 for 1^/2 whorl; whorls 4^4- Aperture ovate; peristome simple, strong and attached 

 close to the penultimate whorl. — Operculum situated close to the peristome, very 

 thick and shelly, the subcentral nucleus slightly sunken below the ^outer whorl; 

 dark grey in central portion. Major diameter 18, minor 15,3, alt. axis 10,6 mm. 

 Smith bemerkt dazu mit Recht : The var. minor of Godwin Austen dififers only from 

 the typical form in the absence of the spiral colour lines, the form and spire being 

 almost identical. The size quoted by the author is altogether misleading, as the 

 largest of the specimens placed by him as this variety is 25 mm., the normal size 

 of the species. All the examples have the dark purplish zone upon the upper part 

 of the spire. 



3» Otoporaa balfouri Godwin- Austen. 



Taf. 145. Fig. 4—7. 



Testa globoso-turbinata, aperte et pervie umbilicata, solida, albida, vestigia epidermidis 

 fuscescentis conservans, in anfractibus superis distincte sed subtiliter clathrata, in inferis 

 liris spiralibus distinctis regularibus undique nisi in umbilico et striis versus aperturam di- 

 stantibus costiformibus sculpta. Spira pyramidalis, apice laevij (plerumque decollato); su- 

 tura impressa. Anfractus 5 convexi celeriter accrescentes, ultimus antice longe et sat pro- 

 funde descendens. Apertura parum obliqua, fere piriformis, supra acuta, infra dilatata, in- 

 tus fuscescenti-alba, late fuscescenti limbata; peristoma callo brevi exciso subcontinuum, so- 

 lidum, fuscescens, parum reflexum, margo columellaris basi arcuatus, dein stricte ascendens, 

 angulum prominentem cum callo parietali formans. — Operculum — ? 



Diam. maj. spec. depicti 39, min. 34, alt. 35 mm, 



Otopoma balfouri Godwin-Austen, in: Pr. Zool. Soc. London 1881 p. 253 

 pl. 27 fig. 2, 2a. — Crosse, in: Journal de Conchyliologie 1884 



*) Shell globosely turbinate, solid, very openly umbilicated, ribbed regnlarly and spirally throughont; 

 bnt the ribbing does not ästend within the umbilicas; colonr white; spire pyramidal, decollate nsnally for 



