22 TROCHUS. 



T. FENESTRATUS Gmeliii. PI. 4, figs 28, 29. 



Imperforate, solid, conic, white or grayish, mottled and maculated 

 with green, brown or olive, base unicolored, white ; apex acute ; 

 whorls 9-11, the apical ones smooth by erosion, the following armed 

 around the lower margin with radiating squamose or (on the last 

 whorl) solid tubercles, which are usually laterally compressed on the 

 lower whorls, and number 12 to 20 on the last whorl ; entire surface 

 above the periphery covered with fine oblique wrinkles, which are 

 more or less beaded by a few (3 to 5) revolving lirse ; base flat, con- 

 centrically lirate, the Iira3 8 to 14 in number, the outer ones crenu- 

 lated by fine radiating wrinkles which are continued a short distance 

 inward from the periphery; aperture transverse, the outer and 

 parietal walls lirate within, the base more or less strongly uni-lamel- 

 late ; columella with a strong downward directed acute fold. 



Alt.30-35, diam. 28-32 mill. 



Indian 0. ; Java ; Sooloo Is. ; Philippines ; Viti Is. ; Navigator Is.; 

 New Caledonia, etc. 



T. fenestratus GMEL., Syst. Nat. xiii, p. 3582, 1788. T. circum- 

 sutus GLD., U.'S. Expl. Exped., t. 13, f. 220. T. erenulatus RVE., 

 Conch. Icon., f. 17, (non T. erenulatus Lam.) T. exaltatus PHIL., 

 Conch. Cab. II, p. 108, t. 17, f. S. T. exaltatm RVE., Conch. Icon., 

 f. 16. T. caparatus PHILIPPI, Conchyl. Cab., p. 107, t. 17. f. 7. 



A variable form, which, however may be readily recognized by 

 the sutural knobs and secondary sculpture of fine wrinkles above, 

 and by the crenulated or beaded lira? around the outer edge of the 

 base. 



T. NODULIFERUS Lamarck. PI. 3, figs 18, 19. 



Shell large, ponderous, solid, imperforate, conic; whorls about 12, 

 planulate above, prominently knobbed around the sutures and pe- 

 riphery, the tubercles about fifteen in number on the last whorl ; 

 there is usually visible a secondary sculpture of fine subobsolete ra- 

 diating wrinkles ; base flat, very obsoletely lirate, smooth, polished, 

 white or tinged with green around the central portion ; aperture 

 smooth within ; columellar fold strong, heavy, directed downward; 

 color pinkish, more or less mottled with rose ; old specimens uniform 

 grayish. Alt. 70, diam. 75 mill. 



Red Sea (Forskal) ; Philippines. 



T. noduliferus LAM., An. sans Vert., vii, p. 18, 1822. T. forskali 

 (Bolt.) MORCH, Cat. Yoldi, p. 158. T. dentatus (in part) PHILIPPI, 

 Conch, Cab. II, p. 7. 



