j^ TEREBRA. 



B. Shell with plicate or tuberculate band below the sutures, 

 defined by a sulcus. 



* Whorls plicate. 



T. AFFINIS, Gray. PI. 2, figs. 22, 18. 



Whorls with distinct subsutural band, covered with flat longi- 

 tudinal ribs, separated by narrow impressed, often punctate lines ; 

 flesh-color, sparingly mottled with light chocolate or chestnut 

 oblong markings and with a few distant revolving lines of the 

 same color. Length, l'5-2'25 inches. 



Philippines, Seychelles, Viti Isles. 



It is T. eburnea, Hinds (fig. 18), T. striata, Quoy, T. pertusa, 

 Kiener, var. 

 T. VARIEGATA, Gray. PL 2, figs. 15, 19, 21, 23; PL 1, figs. 5, 7, 



8; PL 3, figs. 31,37,38. 



-Spirally grooved, more or less longitudinally plicate on the 

 upper, sometimes on all the whorls, sometimes becoming granular 

 at the intersections of the sculpture, a swollen callous band below 

 the sutures ; whitish, marked with chestnut between the plica- 

 tions of the band, strigated with chestnut below it, with a 

 central white band on the body-whorl, beneath which is a second 

 series of strigations. Length, 2*5-3'25 inches. 



Mazatlan, Guaymas, Lower and Southern California, 



Panama, Galapagos Is., China, Sea, W. Africa. 

 T. armillata, Hinds (figs. 21,23), T. Hupei, Lorois (fig. 5), 

 T. aspera, Hinds (fig. 7), T. Petiveriana, Desh. (fig. 31), and T. 

 glauca, Hinds (fig. 19), are synonyms. The following unfigured 

 species, described by P. P. Carpenter, and which are smaller than 

 the type, being but little over an inch in length, may constitute 

 a minor variety. They occur at Mazatlan and extend northwards 

 to Southern California : T. albocincta, T. Hindsi, T. subnodosa, 

 T. rufocinerea; T. simplex, from Sta. Barbara and S. Pedro, Cal. 

 Yery probably the more northern distribution of this form of an 

 essentially tropical genus will account for the smaller size of the* 

 specimens occurring on the California Coast ; they are precisely 

 like T. variegata of the same size and number of whorls, but 

 seem not to grow larger. 



To the above numerous synonyms from the West Coast of 

 America are to be added T. albicostata, Adams and Reeve (fig. 



