TRIBE NYMPHACEA. 57 



P. Fkrroensis.* Lam. 2.— Turt. B. p. 94. t. 8./. 1.— 

 Tellina F. Gmel. 3235.— W. t.4.f.36.—D.p. 77. -T.Incar- 

 nata. Pennant, t.47 './. 31. — List. t. 394./. 241. — T. Angulata. 

 Born. t. 2.f. 5. Oblong, with fine trans verse wrinkles, decussated 

 on the flattened anterior slope, which is sub-truncated at its ex- 

 tremity, and defined by a slight elevation in both valves, dirty-white, 

 with pink rays : beaks sub-central. T 9 <y. .If.— North Europe. 



P. Vespertina.* Lam. 3.— Solen V. Gm. 322S. — W. t. 

 3. f. 27. — Tellina Depressa. Don.t. 41. — T. Albida. D. p. 

 78.— Ch. f 59, 60.— {young) Turt. B. t. 6. /. 10. Oblong, 

 moderately thick, sub-equilateral, nearly smooth, anteriorly slightly 

 angulated ; whitish or pale straw-coloured, rayed with pale reddish 

 purple. — Variety, from Venice, more of a violet colour, with 

 darker rays : violet within. {Born. t. 2.f. 6, 7.) 1-J- . . 2\. — Medi- 

 terranean and Atlantic. 1 



P. Maculosa. Lam. 5.—E. t. 228. /. 2.— Sav. Egypt, t. 8. 

 f. 1. Oval-elliptic, with interrupted broad reddish livid rays, on 

 a paler round, mottled by white spots : the oblique sub-imbri- 

 cated transverse wrinkles almost become ridges at the angulated 

 anterior extremity : inside tinged with lilac, the teeth strong, and 

 the nymphse violet. — Tiger Bay, Africa. 



P. Cerulescens. Sow. G.f 3. —Reeve, t. 53. f 3. — Tel- 

 lina Gari 1 Lin. Gmel. 3229. — An. Solen Amethystus. D. p. 

 68. — W. t. 3.f. 36. Oblong, hinge nearer to the posterior rounded 

 than the anterior angulated extremity ; reddish violet, with transverse 

 concentric wrinkles, which are smoother at one end than at the 

 other, and minute vertical lines seemingly under the outer surface : 

 nymphae prominent. 1^ . . 2 J. — E. Indies. — Variety, with indis- 

 tinct rays, and reddish violet within. — The fold is regular, and 

 not like a Tellina. 



P. Elongata. Lam. 7. — Del. t. 5. f. 4. — An. Sav. Egypt. 

 t. 8. f. 2. ? Elongated ovate, ventral margin not much rounded, 

 pale with light violet rays and bands ; beaks fulvous and tumid ; 

 inside with a bluish anterior ray. 3. — Red Sea. 



P. Flavicans. Lam. 8.— Del. t. 5. f. 5. Elliptic, not at all 

 angular, yellowish -flesh-colour, finely striated transversely. — 

 Variety. Sanguinolaria Livida. (Lam. — W. S. t. \.f 3.) 

 Semi-orbicular, thin, smooth, pale violet, with three white rays 

 on the posterior side. 2\. — New Holland. 



P. Alba. Lam. 10. Oval, white, with indistinct rays, thin, 

 minutely and transversely striated. "Closely resembling the last, 

 of which perhaps it is only a strong "Variety." — (Desh.) 



P. Squamosa. Lam. 9. — Del. t. 5. f 6. Elongated, oblong, 



1 P. Virgata, Lam. 1. and Florida, Lam. 4. belong to this 

 species. (Deshayes). 



