22 



P. COSTATULA. Flem. Brit. An., p. 437, A single 

 valve was supplied to me by Mr. Peach from Gorran. 



P. STRIGILLATUS. Flem. Brit. An., p. 439. Fleming 

 reports it from Torbay and Cornwall. 



NYMPHACEA TELLINARIA. 



The first division is marked by having one or two 

 lateral teeth. 



TELLINA. 



GENERIC CHARACTER: SUell transverse or orbicular, 

 in general rather flat; the anterior side angular, with a 

 flexuous and irregular fold on the margin. One or two 

 cardinal teeth in the same valve ; two lateral teeth, often 

 distant. 



* T. SQUALIDA. Mont. Test. Brit., vol. 1, p. 56. Flem. 

 Brit. An., p. 436. I have found it at Par. 



* T. DONACINA. T. Trifasciata. Pen. Brit. Zo., vol. 4, 

 p. 88. T. D. Mont. Test. Brit., vol, 1, p. 58. Stew. 

 Elem., vol. 2, p. 371. Flem. Brit. An., p. 435. I have 

 obtained it from the byssus of the Pinna from deep water; 

 and also near the land, but rarely. Montagu found it in 

 Falmouth harbour. 



* T, TENUIS. T. Planata. Turt. Lin. Pen. Brit. Zo., 

 vol. 4, pi. 48, fig. 29. Stew- Elem., vol. 2, p. 370. Mont. 

 Test. Bril., vol. 1, p. 59. T. T. Flem. Brit. An., p 436. 

 It is in abundance at Par, but far less common eastward. 



T. STRIATA. Turt. Lin. Mont. Test. Brit., vol. 1, p. 60. 

 Flem. Brit. An., p. 436. Rare. I found two or three 

 single valves at Par. 



* T. CRASS A. Turt. Lin. Pen. Brit. Zo., vol. 4 pi. 43, 

 fig. 28. Mont. Test. Brit., vol. 1, p. 65. Flem. Brit. An., 

 p. 436. Common. 



T. PUNICEA. Turt. Lin. T. Ljeta. Mont. Test. Brit., 

 vol. 1, p. 57. Flem. Brit. An., p, 435. Rare. I have 

 procured what I suppose to be this shell, from the byssus 

 of the Pinna. 



* T. FABULA. Turt. Lin. Mont. Test. Brit., vol. 1, p. 61. 



Flem. Brit. An., p. 435. Rather common. 



LUCINA. 



GENERIC CHARACTER: Shell suborbicular, with un- 

 equal sides ; beaks small, pointed, oblique. Two diverging 

 cardinal teeth (one of them bifid) which vary or disappear 

 with age. Most species have two lateral teeth, the pos- 

 terior nearest the cardinal; some have no lateral teeth. 

 Two very separate muscular impressions, the posterior 

 produced in the form of a band, sometimes very long, and 

 extending to the middle of the valve. Ligament external. 



