210 GLYPHIS. 



F. excelsa Reeve (pi. 39, fig. 96). Shell elevately conical, in- 

 clined anteriorly, finely latticed with radiating and concentric ribs 

 which are elegantly squamate ; orifice small, sides prettily exca- 

 vated in the middle ; brownish-white, spotted here and there with 

 pinkish-brown. (Rve.') 



Eastern Seas. 



G. PLUVIANA Ball. PL 27, figs. 52, 53. 



Shell low, conical, reticulated, white or translucent, variegated 

 with gray or olive-green lines or dots mostly radiately disposed ; 

 form variable with station, but usually in the young and in more 

 normal adults both slopes of the cone are a little concave near the 

 apex. The anterior slope slightly convex ; the posterior slope 

 straight or a little concave, and usually a little longer than the 

 other, though these characters vary with station. Base is rounded- 

 oval, symmetrical and equal at both ends, with a thin simple mar- 

 gin. Sculpture of slightly irregular sudden enlargements of the 

 shell, giving the effect of very narrow steps, over which some twenty 

 moderately strong, and as many more faint, flattened radii seem to 

 flow. In other specimens these step-like ridges are produced into 

 low laminse, and the ribs are also stronger and at the intersections 

 nodulous, or even a little scaly. Apex erect, truncate by the pore, 

 which is circular, simple, and within margined by a narrow horse- 

 shoe-shaped callus. Exterior dull or unpolished, interior shining, 

 with the color rays and ribs visible through the thin shell. Two 

 specimens measure, alt. 4'0 and 6'0, Ion. 1OO and 9*5, lat. 6*6 and 

 6*5 mill., respectively. (Dall.~) 



Florida Straits to Barbados, 76-100 fms. 



G. fluviana DALL, Blake Gastrop., p. 408, t. 14, f. 6, 6a. Closely 

 allied to G. alia C. B. Ad. 



Group of G. italica Defr. 



Surface rather finely latticed ; the radiating riblets generally 

 alternating or unequal in size. 



G. ITALICA Defrance. PI. 36, figs. 14, 15, 16. 



Shell ovate, narrower in front, rather depressed ; lateral slopes 

 convex below, becoming concave or straight above; sculpture con- 

 sisting of closely crowded, rounded radiating riblets, and very fine, 

 -close concentric growth striae. There are about 20 equidistant rib- 



