38 
Dr. Maton’s and Mr. RACKETT's 
Encyclop. Method. t. 248. f. 3. 
Montagu Test. Brit. p. 36. 
Donovan Brit. Shells, t. 174. M. Pictorum. 
Habitat in fluviis, rarissima. 
Testa 1 poll. longa, 13. lata, colore olivaceo. Cardo ut in M. Pictorum. 
Found in the river Monah d near pierit, Berks, 
by Mr. Montagu. | Gi | 
This species has been considered ry some &'authors as 
Mya Pictorum, probably from being made use of by 
. the Dutch to contain gold and silver leaf, ground for 
painters. It seems to be common in Holland, but is 
seldom found here. On an accurate examination of 
Linnzus’s description and references, it is evident that 
the following species, termed Mya ovalis by Dr. So- 
lander and others, is the true M. Pictorum of the Sy- 
stema Nature, since it exactly corresponds with the 
figures given by Bonanni and Lister. Linnzus appears 
also to have adopted his trivial name from Bonanni, 
who says, “ Concha Pictorum dicta non.e colore, 
“sed ab usu Pictorum qui colores, argenti aurique 
* pigmenta ut plurimum in ea reponunt." 
Pictorum. M. testa ovata, cardinis dente primario crenulato, la- 
— Petiver Gaz. t 98. A 9. 
Valentyn Mus. t. 14. F 15. 
Ginann. Qp. Post. t. 4. f. 16. 
terali longitudinali, alterius duplicato. Linn. Fauna 
Suecica,n. 2129. Syst. Nat.1112, n. 28. Gmel. p. 3218. 
Bonanni Recr. 2. f. 40. 
Santee ga Angl. t. 2. f. 30. 
aeri 5 J. P 
Se Murray 
