TRIVIA. 203 



T. MAUGERI, Gray. PL 22, figs. 23, 24. 



Pyrifonnly ovate, fulvous rose-color, closely ribbed, ribs 

 somewhat flexuose, dorsal line narrow, back obscurely stained 

 with a large faint brown blotch, right side pink. 



Length, about '7 inch. 



Galapagos Is. 

 T. PISUM, Gask. PI. 22, figs. 29, 30. 



Spheroidal, light fawn, ribs large, prominent; aperture rather 

 wide, extremities slightly produced, dorsal impression long. 



Length, about -45 inch. 



Ceylon. 

 T. SANGUINEA, Gray. PL 22, figs. 21, 22. 



Ovate, purple-brown, back stained in the middle with a blood- 

 red spot, whitish at each end, ribs whitish, dorsal impression 

 almost obsolete. Length, -35-'5 inch. 



California Ecuador. 



Described by Dufresne as T. lathy rus. 



T. FUSCA, Gray. PL 22, figs. 35, 36. 



Smaller, narrower and more produced than the preceding, 

 ribs finer and of the same color as the shell. 



Length, -15--30 inch. Galapagos Is. 



T. SUBROSTRATA, Gray. PL 22, figs. 38, 39. 



Globose, dark chocolate-brown, extremities slightly beaked, 

 dorsal line well marked. Length, -15--3 inch. 



West Indies. 



Locality given in Mazatlan Catalogue by Dr. Carpenter is 

 improbable. As before stated, the white variety of this species 

 mentioned in Krebs' Catalogue is most likely T. globosa, Gray. 



b. Having no dorsal impression. 



* Shell white. 

 T. CANDIDULA, Gask. PL 22, figs. 33, 34. 



Globosely ovate, ribs strong, rather conspicuous. 

 Length, -25 inch. 



Canary Is., Azores, Spanish Coast (Hidalgo), Mexico. 

 Credited also to several Pacific localities, the correctness of 

 which is somewhat doubtful. 



This species was almost simultaneously described by Duclos 

 as T. olorina, and by Beck as T. approximans. 



