22 GUTTURNIUM. 



T. TRIPUS, Lam. PI. 12, fig. 93. 



Pale yellowish brown, lighter colored on the revolving ribs; 

 white or pale blush within the aperture. Length, 2 to 3 inches. 



Indian Ocean, China. 



Like T. caudatus, this species has canaliculate sutures. 



T. VESPACEUS, Lam. PL 12, figs; 94-100. 



Very, finely granulated ; dorsal tubercles large, .giving the 

 shell a somewhat hump-backed appearance. Yellowish white, 

 marbled and banded with brown. Length, 1-5 inches. 



Australia, Viti Isles, Sandwich Isles. (Pease). West Indies. (Swift). 



The above localities are all authentic. The typical full-grown 

 shell is that described by Reeve as T. Thersites (figs. 99, 100), a 

 forin occurring both in the West Indian and Polynesian localities. 

 T. vespaceus was described from a smaller, though perhaps full- 

 grown shell, probably a more stunted growth. T. elongatus ( fig. 96) . 

 and T. gracilis (fig. 9T), of Reeve, are of somewhat more graceful 

 form and have a longer canal ; the latter is represented in the 

 collection of the Philada. Academy by specimens from St. Croix, 

 W; I., and from the Yiti Isles. 



T. TENUILIRATUS, Lischke. PL 42, fig. 105. 



Shell varying from light to dark brown, white within the 

 aperture. Yarices four; whorls nine, of which the first four 

 are embryonal and small. Length, 40 mill. 



Japan; Sandwicli Isles, ( W. H. Pease). 



I copy the figure of Dr. Lischke, which represents the unique 

 and decidedly imperfect specimen from which he described his 

 species. 



T. AMICTUS, Reeve. PL 40, fig. 188. 



Whitish, with a soft, sparingly bristled epidermis. 



Length, 1'4 inohes Philippines. 



I do not know the species. The figure somewhat resembles 

 Eupleura caudata. 



T. EXARATUS, Reeve. PL 12, figs. 102, 104. 



Shell with two varices ; the whorls flat shouldered ; revolving 

 ridges duplicate. Whitish, variegated or banded with brown, or 

 brown with a white median band. Length, I't5 inches. 



Australia. 



