152 Bulletin 29 316 



pie; the single columellar plication large and sharp. Length of 

 shell 3.50, of body whorl 1.75, of aperture 1; greatest diameter 

 1 mm. 



Locality. — (Exp'd '16) Bluff 3, Cercado de Mao. 



SUBORDER SCUTIBRANCHIATA 



A . SUPER-FAMIL Y RHIPIDOGL OSS A 



Genus Neritina Lamarck 



Neritina {Puperita) jigulopicta, n. sp. 

 Plate 24, Figure 10 



Shell small, smooth, opaque, white, painted with an open ir- 

 regularly reticulated design embellished with series of parallel 

 dashes, producing the effect of a design on Indian pottery; spire 

 apparently characteristically eroded; aperture semi-lunar; outer 

 lip thin; inner lip with a heavy, expanded, platform-like callus, 

 finely crenulate on its free edge. Greatest diameter of shell 8, 

 greatest thickness 5 mm. 



This shell is probably the ancestor of N. pupa Ljnne living 

 in the West Indies; but differs markedly in the platform-like 

 callus. 



Locality. — (Exp'd '16) Gravels of the Rio Cana near 

 Caimito. 



Neritina (Smaragdia) viridemaris, n. sp. 



Plate 24, Figure 11 



Neritina viridis Gabb, Trans. Amer. Phil. Soc, vol. 15, p. 242, 1873. 

 Not N. viridis Linn6. 



Shell small, delicate, color pale sea green painted with par- 

 allel, black lightning-like flashes, straight and zigzag; form some- 

 what oblique; spire depressed; suture distinct; whorls three, 

 the last convex, slightly shouldered; aperture wide, produced an- 



