PLATE CXXV 



MACTRA GLAUCA, 



GLAUCOUS MACTRA, 



GENERIC CHARACTER. 



Animal a Tethys, Bivalve, sides unequal. Middle tooth compli- 

 cated, with a little groove on each side ; lateral teeth remote. 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Shell ovate, sordid white with brown (or glaucous) rays : very 

 finely itxiated transversely, and wrinkled on the anterior end. 

 Mactra Glauca: testa ovata sordide alba glauco radiata sub- 

 tilissime transversim striata anterius rugosa. Gmch 

 T. I. p. 6. p. 3260. fp. 20. 

 Chemn. Conch. 6. i. 23./. 232, 233. 



This is a new species as a British shell ; and the conchologist is 

 indebted to Miss Pocock for the discovery of it on our coaft. The 

 attention with which this lady has honoured the science has not been 

 rewarded by this new species only : we have been favoured with 

 several others, besides many rare kinds that have been found by 



VOL, IV. e 



