labio reflexo umbilicum mediocrem subobtegentc ; hibro in- 

 crassato, cxtiis marginato. — Opcrc. ? — Long. 28, lat. 22 

 mill." (Pct.) 



Cyclostoma Coquandiana Pet. in Jom-n. Conch. 1852, 

 4. p. 417. t. 12. f. 2. 



llabitat in insula Madagascar? 



3H a, Cyclostomus occlusus Morch, 



..DifFert a C Cuvieriano t. minore (38 mill.), umbilico 

 fere triplo angustiore, obtecto." (Cat. Yold. p. 39.) 

 332, Cyclostomus sulcatus Lam. 



Obs. Nomen Lamarckianum haud rejiciendum est ob 

 C. sulcatum Drap. =: C. buccinulum Bolt. 



343 a. Cyclostomus Macareae Petit, f 



„C testa subdiscoidea, depressiuscula, miibilicata, niti- 

 diila, albido-fulvescente , spiraliter zonis nigrescentibus nu- 

 merosis ornata ; anfract. 5 — 6 rotundatis , transversim lae- 

 vissime sulcatis , ac longitudinaliter striatis ; ultimo subtus 

 sublaevigato ; sutura distincta ; apertura suborbiculari, peri- 

 stomate albicante , vix reflexo ; umbilico profundo. — Operc. 

 calcareum. — Alt. 19, lat. 30 mill." (P.) 



Cyclostoma Macareae Feiit in Journ. Conch. 1853. 

 4. p. 361. t. 11. f. 1. 



Habitat prope S. Augustin in parte meridionali insulae 

 Madagascar (Guillain). 



347 a. Cyclostomus Belairi Petit f 



„C. testa globoso-conica, umbilicata, purpureo-fusces- 

 cente; fasciis fuscis cingulata; spira conico- subacuta; an- 

 fract. 6 rotundatis; superioribus transversim plus minusve 

 sulcatis, ultimo sublaevigato, subtus sulcato; apertura sub- 

 orbiculari, ampla, intus purpurascente ; columella piu*purea, 

 callosa, callo partim umbilicum obtegente; labro albo, valde 

 reflexo. — Alt. 30, lat. 30 mill." (P.) 



Cyclostoma Belairi Petit in »Tourn. Conch. 1853. 4. 

 p. 30(1. t. 11. f. 2. 



Habitat in insula Madagascar. 



