21 



This family is subdivided into N. Solenaria, and N. 

 Tellinaria. 



NYMPHACEA SOLENARIA. 

 SANGUINOLARIA. 

 GENERIC CHARACTER: Shell transverse, subeliptical, 

 slightly gaping at the lateral extremities ; superior margin 

 arched, not parallel to the lower; two approximate teeth 

 in each valve. This genus is distinguished from the 

 Solens by the superior margin not being parallel to the 

 inferior; they also gape but little at the lateral extremities. 



* S. VESPERTINA. Tellina Variabilis. Turt. Lin. T. 

 Depressa. Pen. Brit. Zo., vol. 4, pi. 47, fig. 27. Solcn 

 Vespertinus. Mont. Test. Brit., vol. 1, p. 54. Sangui- 

 nolaria V. Flem. Brit. An., p. 460. Found by Montagu 

 at Falmouth ; where it is scarcelv uncommon. 



S. DEFLORATA. Venus D. Turt. Lin. Pen. Brit. Zo., 

 vol. 4, pi. 57, fig. 54. Stew. Elem., vol. 2, p. 381. Mont. 

 Test. Brit., vol. 1, p. 123, pi. 3, fig. 4. S. D. Flem. 

 Brit. An., p. 461. 



Montagu says, " we found a perfect, recent, specimen at 

 Falmouth, it was dredged from the harbour of that place, but 

 is no doubt a very rare species in England.'' 



PSAMMOBIA. 

 GENERIC CHARACTER: Shell transverse, eliptical or 

 oblong oval, rather flat, slightly gaping at both sides ; 

 beaks prominent. Two cardinal teeth on the left valve, 

 and one entering tooth on the opposite valve, 



* P. FERROENSIS. Tellina Incarnata, Pen. Brit. Zo., 

 vol.. 4, pi. 47, fig. 31. T. Ferrocnsis. Stew. Elem., 

 vol. 2, p. 371, T. Fervensis. Mont. Test. Brit., vol. 1, 

 p. 55. P. Ferroensis. Flem. Brit. An., p. 438. Without 

 being rare, it seems somewhat scarce, perhaps from being 

 easily destroyed. I have found single valves adhering 

 to the byssus of the Pinna, from the depth of 50 fathoms ; 

 and I once took it from the stomach of the Picked 

 Dog-fish. 



* P. FLORIDA. Flem. Brit. An., p. 437. In St. Austle 

 bay, and near Falmouth. A specimen marked for me at 

 the British Museum, Ps. Bilineata, not uncommon in Corn- 

 wall, seems to be of this species, 



* P. SOLIDULA. Tellina Carnaria. Pen. Brit. Zo., vol. 4, 

 pi. 49, fig. 32. T. S. Mont. Test. Brit., vol. 1, p. G3. 

 T. C. Stew. Elem., vol. 2, p. 373. P. S. Flem. Brit. 

 An., p. 430. Abundant at Par. 



* P. ROTUNDATA. Tellina R. Mont. Test. Brit., vol. 1, 

 p. 71, pi. 2, fig. 3. P. R. Flem. Brit. An., p. 438. 1 

 have found it at Par; and have obtained it from the byssus 

 of the Pinna. 



