ASPIDOBRANCHIA. CAPULIDZ. 21d 
straight lamelle adhering in a single transverse range at the 
bottom of the branchial cavity, which is situated above the 
head and neck: the branchial auricle is situated behind, under 
the left extremity of this range. 
The mouth is rostriform and very susceptible of being pro- 
longed, and is wrinkled above with a deep groove. The tenta- 
cles bear the eyes on their exterior aspect near their base. 
Under the cesophagus, and before the anterior margin of the 
foot, there is a kind of ruff, formed by many reflections of a 
double membrane, which, when extended, probably forms an 
easier prolongation of the foot for facilitating the animal when 
creeping. 
The anus is situated near the right side of the branchial 
cavity. 
The general organization of the genera composing this Family 
approaches much nearer to that of the Purpuridee than to the 
Fissurelladee, Emarginulade or Patelladee. 
Synopsis Generum. 
Testa conicé elevata. Vertex recurvus sub- 
amiralis 73e... at... LOU. CAPUEUS: 
Testa conica, atts lamella pr een ee in- 
MN RRNEE CEE crt ec es oa cc apere eos © © 101. MiITELLA. 
Genus 100. Capu.us. 
Capulus, De Montfort, Cuvier. 
Pileopsis, Lamarck. 
Testa ad basin plus aut mints rotundata, spiraliter elevata. 
Spira reflexa. 
Animal, ut supra. 
Shell more or less rounded at its base, spirally elevated. 
Spire reflexed behind. 
Animal as above. 
CarpuLus HunGARICUS. 
C. testa lmneis tenuibus elevatis, ab apice usqué ad basin ductis, 
L 
