745 



Sp. 74. T. fluctuosa (pi. clxiii. f. 163), Gould, Invert. Mass. 

 p. 89. f. 50. 



Taj), testa parva, teuui, compressa, ovali, pallide fulva, minute 

 radiatim striata, postice laevigata, margine dorsali depresso, recti- 

 usculo ; latere postico oblongo, subtruncato, margine interne- cre- 

 nulato. 



A small, thin, flattish-oblong shell, of a pale colour, minutely 

 striated in both directions, but most conspicuously radiating from 

 the umboes. 



Sp. 75. T. Mero^eformis (pi. clxiii. f. 160), Soiuerhy,jun. 



Tap. testa solida, subcompressa, ina3qualiter subtrigona, leviter 

 rotundatiin sulcata, ad umbones lasvigata, omnino pallide fulva, 

 medio et prope umbones castaneo marmorata ; latere antico brevi ; 

 lunula depressa, lanceolata, polita, declivi; latere postico subelon- 

 gato, subtruncato ; margine dorsali declivi, late depresso, nitente. 



A fine species recently received by Mr. Cuming, at first sight 

 very nearly resembling a Meroe, but wanting the deep incision of 

 the dorsal margin characteristic of that genus. 



