TURBO. 199 



a whitish ground ; the longitudinal striae form minute laminar 



the suture is narrowly impressed, not broadly channelled as in T. 



foliaceus." 



Habitat unknown. 



Var. FERRUGINEUS (Anton) Phil., (1849 ?). PJ. 44, fig. 77. 



Shell ovate-conoid, perforate, yellowish, painted with wide ferru- 

 ginous flammules ; last whorl with about fourteen line, penultimate 

 with about six, the fourth subnodose, forming a distinct angle. 



Alt. 25, diam. 20 mill. 



Habitat unknown. 



T. TURBINOPSIS Lam., 1819. PI. 62, fig. 9. 



"Shell elongato-ovate, umbilicate, pale flesh-colored, maculate 

 with ferrugineous ; whorls rounded, traversed by elevated spiral 

 cinguli, the interstices crispate with lamellar incremental stria?; 

 larger cinguli squamose ; aperture subcircular ; umbilicus narrow." 



Philippine Is. (Philippi.) 



It is the Delpliinula turbinopsis of Lamarck ; T. lamarckii Phil. 

 is a synonymy. 



With the exception of Philippi whose identification is doubtful, 

 no one, in recent times, has seen this form. 



T. LAJONKAIRII Desh., 1839. PI. 49, fig. 42. 



Shell large, turbinate, solid, umbilicate, white, sometimes sparsely 

 maculate with chestnut; whorls 6, striate, spirally lirate, bicarinate, 

 the last one and one-half armed with erect long stout tubular spines 

 on the carinae, ten to twelve in number on the last whorl, usually 

 tinged with green; aperture ovate, pearly white and iridescent 

 within; columella thickened below, deflexed, produced and some- 

 what channelled, excavated at the conspicuous umbilicus. Alt. 80, 

 diam. 80 mill. Keeling Id., Indian 0. ; E. Indies. 



Operculum (pi. 59, fig. 10,) subcircular, inside dark brown, with 

 four whorls and subcentral nucleus ; outside convex, coarsely granose, 

 and dark brown in the center, lighter and minutely granulate 

 toward edges, margin sub-striate, with an orange line. 



This species is most nearly allied to T. argyrostomus, differing in 

 the greater development of spines and the wider umbilicus. The 

 spines first appear as vaulted scales upon the upper carina ; only in 

 well grown specimens do they become closed in front into tubes. 



