42 ASPA, ARGOBUCCINUM. 



R. AFPINIS, Brod. PI. 22, figs. 38-41 ; pi. 23, fig. 55. 



Light yellowish or fleshy white, frequently rose-tinted towards 

 the apex ; surface stained and spotted with brownish red ; tuber- 

 cles of the angle largest, sometimes bipartite. 

 Length, 1/5 to 2 inches. 



Philippines, New Caledonia, lux. A/uiaa, 



Samoa Isles ; also West Indite. 



R. livida, Reeve (fig. 39), is a less angulated form with the 

 tubercles more nearly equal in size throughout. I cannot detect 

 an}^ difference in the West Indian shells, of which E. ponder osa, 

 Reeve (fig. 55), may represent the typical affinis, whilst E. 

 Cubaniana, d'Orb. (fig. 40), is equivalent to E. livida. So many 

 intermediate stages of development of angle and tubercles occur 

 that no separation of the species is possible; moreover, the 

 identity of the whole with E, granifera, Lam., is probable. 



Subgenus Aspa, H. & A. Adams. 



R. MARGIN ATA, Gmelin. PI. 23, fig. 52. 



Porcellanous, polished ; white with a light yellowish tinge. 



Length, 20 to 35 mill. 



E. Coast of Africa ; fossil in Piedmont. 



Subgenus Argobuccinum, Klein. 



R. GIGANTEA, Lam. PI. 24, fig. 09. 



Very light yellowish brown, more or less stained with darker 

 brown. Length 5 to 7*5 inches. 



Mediterranean ; Miocene and Pliocene of S. Europe. 



R. LEUCOSTOMA, Lam. PI. 23, figs, 53, 54. 



Chestnut-brown, variegated with white upon the varices, under 

 a short velvety brown or green epidermis ; aperture white within. 



Length, 2'5 to 3'5 inches. 



Australia, Tasmania, Ntin Zealand. 



This is one of the species which (like gigantea, lampas, etc.) 

 appears to partake almost equally of the characters of a Triton. 

 The operculum like the Triton, has a terminal initial growth. 



R. BITUBERCULARIS, Lam. PI. 23, fig. 44. 

 Yellowish brown, white within the aperture. 



Length, 20 to 28 mill. 



Indian Ocean, Philippines, Australia. 



