144 CONCUYLlX—niTHYRA. 36. 



canceiiata. Venus testd orbiculo-cordutd, antice angulatd, lamellis trans- 

 versis remotis crebro cancellatis, areola cordatd. 

 Shell round heart-shaped, angular on the anterior side, with 

 remote transverse plates which are closely cancellated, and the 

 areola heart-shaped. 



Tab. nost. 10, fig. 3. 

 Venus canceiiata. Linn. Syst. Nat. p. 1 130. 

 Gmelin, Syst. p. 3270. 

 Tnrton, Linn Syst. iv. p. 220. 

 Chemnits, vi. p. 309, tab. 29, fig. 804 and 305. 

 Mus. nost. From the shores of Guernsea. 



Shell about half an inch long, white with sometimes a slight 

 rosy tinge, with nine or ten rather remote membranaceous ridges, 

 the stronger of which have a raised transverse line between 

 them, and are slightly tubercled on the anterior side ; the inter- 

 stices marked with close-set rib-like longitudinal striae : the 

 anterior side abruptly cut off from the beaks, forming an angle 

 about the middle : beaks near one end, prominent and recurved. 



This species, which is not uncommon in the seas about 

 Guernsea, answers exactly to the figures of Chemnitz, and is 

 easily distinguishable from the young of Venus verrucosa ; for 

 the laminar plates are much more remote, and the marks between 

 them are regular and rib-like, not crossing the plates. 



wibcordata. Venus testd orbicidato-cordatd, costnlis remotiusculis, lon- 

 gitudinali 

 santibus. 



gitudinalibtisque lamellas transversas remotiores decus- 



