32 MAZATLAN BIVALVES 



GENUS TELLINA, Lin. 



H( 47. TELLINA RUFESCENS, Cnemn. 



Ckemn. vi. p. 105. t. 11. f. 97Schroeter, Einl. t. 3, p. 5. no. 11. 



Dilw. Desc. Cat. vol. i. p. 85. Knorr, vol. vi. t. 12, f. 1. 



Hani, in Sow. Thes. Conch, vol. i. p. 307, pi. 63, f. 213. 

 = T. operculata, Grmel. p. 3235, no. 32, Var. exc. Lam. ed. 



Desk. 1836, vol. 6, p. 192. Wood's Ind. Test. p. 19, no. 37. 



Hani. Descr. Cat. p, 62, t. 4, f. 37. 



=T. cruenta, Solander, ms. Portland Cat. p. 58, lot 1360. 

 =T. opercularis Sow. Gen. no. 31, f. 1. Desk. Enc. Meth. 



vers t. 3, p. 1010, no. 9. 



This shell must not be confounded with T. rufescens of Grmel. 

 which = Venus decussata, var ; nor with the too-similarly named 

 T. rubescens of Hani., a shell found as far north as S. W. Mexico, 

 (P. P. C.) but not yet obtained from Mazatlan. T. rufescens 

 is known at once by its large size, red colour (often banded 

 with whitish,) and greatly produced beak. Lower valve pro- 

 jecting, as in Corbula, and displaying faint radiating lines, 

 which are generally obsolete on the upper. It gapes at both 

 ends, and nearly approaches Sanguinolaria. Long. 1*73, lot. 

 3*17, alt. '77. 

 Hah. Coasts of Brazil, Humphreys. Caribbean Sea, Lam. 



"Cab. de M. Dufrene." (Indian Ocean, Wood.) Tumbez, 



(Peru,) in soft, sandy mud, 5 fm., Cuming. Mazatlan ; rare ; 



Upool fy Havre Coll. 



The authorities for the Atlantic Ocean do not appear satis- 

 factory. On the other hand, the shell being known to the old 

 writers is in favour of its having been brought from the West 

 Indian seas. 



Tablet 109 contains 1 small specimen from the L'pool Col., 

 and 1 large one from the Havre Col. in which it was less un- 



48. TELLINA BEODEEIPII, Desk. ms. (teste Cum.} 



Compare Tellinides purpureus, Brod. fy Sotv. ZooL Journ. 

 vol. iv. p. 363. Zool. Beech. Voy. p. 153, pi. 42. f. 2.= Tel- 

 lina purpurascens, Hani. Descr. Cat. p. 74, suppl. pi. 9, f. 18 : 

 do. in Sow. Thes. Conch, p. 295, no. 141, pi. 62, f. 194. 



