SCAPHELLA. 163 



In the animal of this group the basal lobes at the side 

 of the siphon, peculiar to the genera of Voliitklce, ap- 

 pear to be well developed. According to M. D'Orbigny, 

 the animal of C. Brasiliana forms nidimental capsules 

 three inches in length. 



Species of Cymbiola. 



ancilla, Soland. festiva, Swains. 



Beckii, Brod. magnifica, Cheni. 



Brasiliaua, Soland. Magellanica, Sow. 

 Ferussacii, Donov. 



Genus SCAPHELLA, Swainson. 



Shell oblong-cylindrical ; spire short, conical, apex 

 sub-acute, whorls solid, smooth ; aperture narrow, elon- 

 gate ; columella usually with four oblique plaits at the 

 fore part; outer lip thickened internally. 



Ex. S. fusus, Quoy and Gaimard, pi. 18, fig. 3. Shell, 

 S. Junonia, Chemnitz, fig. 3, a. 



From the description and figure given by Swainson, it 

 is obvious that the shells we have indicated constituted 

 his genus ScapJiella, although his first type belongs to 

 our sub-genus Alcithoe, which has certain affinities with 

 Cymhiola. The rare S. Junonia is said to be from the 

 Gulf of Mexico. 



Species of Scaphella. 



exoptanda, Sow. maculata, Swains. 



Junonia, Chem. praetexta, Reeve. 



