304 PYRAMIDELLA. 



P. ROSE A, H utton. New Zealand. 



P. MINUTA, Phil. Red Sea. 



P. SUTURALIS, Maltzan. Ins. Goree, W. Africa. 



P. FLORIDANUS, Morch. West Indies. 



P. BICOLOR, Menke. California. 



Section TRIPTYCHUS, Morch, 1874. 

 P. NIVEA, Morch. PI. 73, fig. 1. 



White, slender ; whorls flattened, each with three spiral ribs, 

 the two upper ones nodulous, body-whorl with two plain ribs below 

 the nodulous ones, and three revolving ridges below the periphery, 

 forming columellar folds ; aperture produced below. 



Length, 8-5 mill. 



Key West, Fla. ; West Indies. 



P. vincta, Dall, is a synonym. The shell is scarcely a Pyra- 

 midella the sculpture and plications are different. 



Section AMOURA, de Folin, 1873. 

 P. ANGULIFERA, de Folin. (Description inaccessible to me.) 



Section TIBERIA, Jeffreys, 1875. 

 P. NITIDULA, A. Adams. PI. 73, fig. 96. 



Deeply umbilicated, small, white, often banded, smooth ; 

 whorls few, rather flat, suture impressed, columella two-plaited. 



Length, 4 mill. 



Japan, Mediterranean Sea, Cape Verd Is., West Indies. 



These localities are all abundantly confirmed. Dr. Jeffreys 

 writes : " 1 have carefully compared my ' Porcupine ' and Medi- 

 terranean specimens with those from Japan and Corea, which I 

 received from the late Mr. Arthur Adams and my friend Capt. 

 St. John, and I cannot detect the slightest difference between 

 any of them in shape, colored band, umbilicus or dentition of 

 the pillar" (Zool. Proc., 364, 1884). Dr. Jeffreys considers the 

 following synonymous : 



P, MINUSCULA, Mpnts. ; P. MEDITERRANEA, Monts. ; P. SUBFAR- 

 CINATA and P. TINCTA, Watson ; P. L^EVIUSCULA, Jeffreys (not S. 

 Wood); P. EXILIS (var.), Jeffreys. 



