— 65 — 



2. Trochus Suarezensis, Fischer. 



Testa auguste perforala, conico-acuta ; an frac tus 9-10 

 planulati, embryo?iales lœves, lutescentes ; reliqui albido- 

 lutescentes, lineis fuscis vel roseis radiantibus, flexuosis, 

 et interdum zonis spiralibus, roseis, ornati, transversim. 

 cingulati, cingulis 7 in penultimo anfractu, superno et 

 inferno prommentioribus, intermediis 5 geminatis, inler- 

 stitiis oblique striatis ; anfractus ultimus angulatus, infra 

 convexus, liris concentricis circiter 8 ornatus ; apertura 

 subquadrata, labro simplici ; columella subtruncata, mar- 

 ginibus [in adullis) callojunciis — Longit. 18, lat. \3mill. 



Habitat Diego Suarez, ins. Madagascar (L. Rousseau). — 

 Mus. Parisiense. 



3. Trochus (Euchelus) Stellio, Fischer. 



Testa auguste et oblique perforata, conoidea, crassa, 

 castanea, albo, rufo etnigro punctulata ; anfractus 5 con- 

 vexiy sutura impressa discreti, primi albidi, lœves; reli- 

 qui asperi, spiraliter cingulati, cingulis inœqualibus, 

 majoribus 5 et minoribus intermediis et granosis in penul- 

 timo anfractu; anfractus ultimus rotundatus ; apertura 

 ovata, labro intus plicato ; columella arcuata, simplici, 

 edentata. — Longit. 16, lat. 16 mill. 



Habitat ?.... Mus. Parisiense. 



Species T. atrato , Gmelin, affinis, sed columella sim- 

 plici, edentata discrepans. 



4. Trochus (Monilea) Lifuanus, Fischer. 



Testa perforata, conoideo-depressa, tenuicula, colore 

 variabilis, albido-lutescens vel rosea, fusco, rubro, roseo 

 7?iaculata y et lineis spiralibus, angustis, albo-articulatis 

 ornata ; transversim et tenerrime sulcata, sulcis strias in- 



