108 CO^CHYLIX—VITHTRA. 27. 



often mistaken for the Tellina striata : but the lateral teeth will 

 at all times distinguish it, there being two small lateral teeth in 

 one of the valves only. 



We believe that the Tellina balaustina, and the T. planata of 

 Linne, are among the numerous varieties of this species. 



rff^?^ Valvis bidentatis, suhorbiculares. 10-11. 

 In each valve two teeth, and the shell somewhat orbicular. 



macuiata. Tellina testd ovato-ofbicvIaH fsquivalvi, striis transversis 



seabris longitudinalibusque minutis, valvis bidentatis cum 



lateralibus. 

 Shell round-oval and equivalve, with rough transverse stria? and 



minute longitudinal ones, each valve with two teeth and two 



lateral ones. 



Tab. nost. 6, fig. 7. 

 Tellina macuiata. lurton, Conch. Diet. p. 173, fig. 13. 

 Tellina scabra. Chemnitz, vi. p. 102, tab. 10, fig. 94. 

 Mus. nost. Taken in Bantry bay. 



Shell an inch long, and an inch and a quarter broad, flat, thin, 

 whitish-brown covered with darker spots irregularly disposed, 

 and marked with numerous transverse raised striae, which give a 

 roughness to the surface, the instertices of which are crossed 

 with minute longitudinal ones; inside yellowish-white glossy : 

 hinge with two primary teeth in each valve, and a strong remote 

 lateral one on each side. 



On the anterior side there is hardly any apparent flexuosity. 

 And Linne, in a note at p. 116, of the Systema Naturae, has 



