EASTERN PROVINCE INTERIOR REGION SPECIES. 241 



The lingual membrane (T. M. U. S., V, Plate IV, Fig. O) is arranged 

 as usual in the Helicidce. Morse 'counted 115 rm. 259. 



rows of 5G-1-5G teeth ; another membrane 

 gave 49-1-49 teeth, with 22 perfect laterals ; I 

 hav^e myself counted 5G-1-56 teeth, with 11 

 perfect laterals. The central teeth have a very jaw of t. dorsaUs. 



long, narrow base of attachment, widening towards the lower margin, 

 which is excavated. There is a line of reinforcement running parallel 

 to the lower edge and for a short distance along the sides. The re- 

 flected portion equals only one-fourth of the length of the base of at- 

 tachment. It is stout, and bears a short, stout median cusp, having a 

 short, blunt cutting point. There are no side cusps or cutting points. 

 The laterals are like the centrals, but asymmetrical; their reflected 

 portion is also longer. The outer laterals {h) have an outer side cusp. 

 The marginals (c) are a simple modification of the laterals, being quad- 

 rate, longer than wide, with one inner, broad, long, oblique, bluntly 

 pointed cutting point, bearing an inner, side, short, acute cutting point. 

 These cutting i)oints on the extreme marginals [d) are simply short and 

 bluntly rounded. Some membranes examined by me seemed to have 

 an extension to the base of attachment beyond the upper margin of the 

 reflected j^ortion, to which it was parallel. This membrane is peculiar 

 in the long, narrow base of attachment and short, reflected portion of 

 the central and first lateral teeth. 



Tebennophorus Caroliiiiensis, Bosc. 



Color of upper surface whitish or yellowish-white, variegated with 

 clouds and spots of brownish and blackish, so arranged as to form three 

 ill-defined longitudinal bands, one on the center of the back and one 

 on each flank, extending from the head to the posterior extremity, anas- 

 tomosing more or less with each other, and having smaller spots of 

 the same color between them ; inferior margin white or yellowish ; foot 

 whitish. Mouth surrounded with a circular row of i^apillae. Body 

 elongated, subcylindrical, flattened towards its posterior extremity, 

 which is obtuse ; eye-peduncles one-fourth of an inch long, brownish or 

 blackish, stout, terminating in a bulb ; ocular points on the superior part 

 of the bulb ; tentacles immediately below the eye-peduncles, white, very 

 short, nearly conical. Mantle fleshy, covering the whole body, its ante- 

 rior edge tinged with brownish, and falling in a slight curve between 

 the two eye-peduncles, reaching on the sides to the margin of the footj 

 1749— Bull. 23 16 



