GLYPHIS. 219 



Distinguished by the finely latticed and beaded sculpture, having 

 larger riblets at regular intervals. 



F. indusica Rve. (fig. 65), and F. dactylosa Rve. (fig. 62) from 

 the same locality, are evidently synonymous. This species should 

 be compared with G. lineata Sowb. and incii Rve. 



G. lineata Sowerby. PI. 63, figs. 29, 30 ; pi. 38, figs. 63, 64. , 



Shell elliptical, elevated, front slope straight, back slope convex. 

 Sculptured with radiating rounded riblets of which about 18 at 

 equal distances are slightly more prominent, the intervals between 

 them bearing three slightly smaller riblets, and toward the margins 

 in large examples, some small interstitial threads ; the whole lat- 

 ticed by slender elevated concentric threads. The more prominent 

 riblets are often pink. 



The color is whitish or yellowish, the larger riblets often darker. 

 Inside whitish, with fine white lines. Orifice short-oval, its width 

 two-thirds its length, the latter contained about 11 times in the 

 length of the shell. Hole-callus truncated behind. Edge crenu- 

 lated. Length 34, width 23, alt. 13 mill. 



North Australian Coast. 



F. lineata Sowb., Conch. Illustr. f. 68.— Thes. Conch, p. 195, f. 

 134, 135. — F. incii Rve., Conch. Icon. f. 69. 



Doubtfully distinct from the later G. juniculata Reeve, but the 

 beading is less distinct, the concentric threads wider apart, and with 

 fewer fine interstitial riblets. It is not so finely sculptured as G. 

 singaporensis. 



G. singaporensis Reeve. PI. 34, figs. 61, 62. 



Shell elliptical, rather depressed, the slopes straight, or the pos- 

 terior slope slightly convex ; sculptured with numerous radiating 

 riblets, alternating at the sides and back with smaller ones, latticed 

 by elevated concentric threads about as far apart as the riblets, 

 forming beads where they cross the radii and cutting the interstices 

 into square pits. 



Color whitish, with obscure patches of brown. Interior bluish- 

 white, with fine white radiating lines ; hole small, oval ; about one- 

 tenth the length of the shell ; situated in front of the middle ; hole- 

 callus truncated behind. Length 17 a, width 11, alt. 6 mill. 



Singapore. 



F. singaporensis Rve., Conch. Icon. f. 100, 101, 1850. — Sowb., 

 Thes. p. 195, f. 118, 119. 



