CONCHOLOGY. lii 



Haliotis tuberculata. Haliotis dubia. 



H. striata. H. iris. 



H. asinina. H. tubifera. 



H. glabia. H. excavata. 



H. lamellosa. H. australis. 



H. unilateralis. H. Midae. 



H. rugosa. H. rubra. 



H. canaliculata. H. tricostata. 



H. tricostalis, H. corrugata. 

 H. Marise. 



FAMILY XIV. 



Plicacea. Two genera. 



1. Genus To niatella. PL XI. 



Animal Body oval, subspiral ; foot divided into two heels by 

 a wide transverse furrow ; head provided with two vertical cylin- 

 drical tentacula, having the eyes placed sessilely upon their inte- 

 rior side. 



Shell. Convolute, oval, cylindrical, mostly striated trans- 

 versely ; no epidermis ; spire very short, last whorl much larger 

 than all the others together ; one or two large plaits on the 

 columella Inhabits the coast of Britain. Six species. 



Tornatella fasciata. Tornatella nitidula, 



T. solidula. T. pedipes. 



T. auricula. T. flammea. 



2. Genus Pi/rainidella. PI. XI. 

 Animal. As preceding genus. 



Shell. Smooth and turreted, without epidermis, elongated 

 conical or subturriculated ; aperture entire demioval ; the outer 

 lip sharp and dentatcd within, columella produced, subperforate 

 at the base, furnished with transverse plaits. Inhabits the Ame- 

 rican and W. Indian seas. Six species. 



Pyramidella terrcbellum. Pyramidella maculosa. 



P. dolabrata. P. plicata. 



P. corrugata. P. ventricosa. 



