APORRHAIS. 131 



A difference in the color-markings of the animal has precisely 

 the same value as if upon its shell, and the variations of the 

 latter, in the present instance, are so unstable as to preclude 

 the possibility of separating species, with sufficiently distinctive 

 characteristics. The genus has but one recent representative, 

 the species described below. It is related to the Strombs 

 through Strombus tere.bellatus. 



T. SUBULATUM, Lam. PI. 11, figs. 27-30. 



Shell smooth, shining, suture linearly grooved, enamelled ; 

 yellowish white, with chestnut or chocolate dots, freckles or 

 zigzag lines, often somewhat indistinctly banded. 

 Length, 2-3 inches. 



Indian Ocean, Java, China Sea, Philippines, 



New Caledonia, Viti Is., Mauritius. 



It is Bulla terebellum, Linn., T. punctatum, Chemn., T. macu- 

 losum, Ads., etc. 



Subfamily Aporrhainse. 



Genus APORRHAIS, Dillwyn, 1823. 

 Section 1. APORRHAIS (sensu stricto). 



A. PES-PELECANI, Linn. PI. 12, fig. 31. 



Yellowish white to light brown. Length, 2 inches. 



Seas of Europe, Iceland. 



This is the Cochlea pentadactylus of Pliny, Vespertilio spinosa 

 of Seba, and R. quadrijidus, Da Costa. Jeffreys says of it (Brit. 

 Conch., iv, 251 1: "Habitat: Coralline zone (occasionally the deep- 

 sea zone also) on all our coasts. This common shell has been 

 recorded from the upper miocene, pliocene, and almost every 

 newer tertiary and quaternary deposit in Europe, from the sea- 

 level to 1360 feet above it. It is shy, slow, and awkward in its 

 movements, twisting about its long neck and foot in order to 

 gain a creeping posture. Among other fanciful names givon to 

 this odd-looking shell, are ' blobber-lipt Edinburgh whilk ' of 

 Petiver, ' aile de chauve-sauris femelle ' or ' patte d'oye ' of 

 D 'A vila, and ' Zamarugola ' of the Venetians, by the poorer class 

 of which people the animal was perhaps is still eaten. Ac- 





