History of British animals - University of Guam Marine Laboratory

434 MOLLUSCA. DONACIDiE. Capsa.Tellina variegata,List. Conch, t. ccclxxxiv.— D. comp. Mont. Test. Brit.10G. Turt. Biv. Brit. 125.— English shores, rare.Length three-quarters of an inch, breadth an inch and a half; glossy, variegated,with a white band from the beak towards the anal angle a few obsoleteconcentric furrows, the inside purple retral extremity more ;produced;than in either of the preceding species.475. D. plebeia.— Triangularly ovate, smooth, with two lonpitudinalfulvous bands.oTellina parva, List. Conch, t. ccclxxxix. Pult. Dorset. 32. Mont. Test.Brit. 107- t. v. f,2. Turt. Biv. Brit. 12C— English and Scottishshores, rare.Length half an inch, breadth three-quarters; broad, thick and strong; yellowish; the teeth large ;the fulvous bands are sometimes absent.476. D. rubra.— Wedge-shaped, smooth, uniformly red.Mont. Test, Brit. Sup. 38. Turt. Biv. Brit. 129. t. x. f. 14—Southernshores of England, rare.About an eighth of an inch in diameter, semitransparent ; inside reddish ;beaks prominent.Gen. CXX. CAPSA. — Shell transverse,abbreviated anteally; hinge with two teeth in both valves ; no lateralteeth.477. C. castanea.— Strong, transversely oblong,with a fewobsolete concentric ridges.2— Donax cast. Mont. Test. Brit. 573. t. xvii. f.Capsa cast. Turt. Biv.Brit. 128. t. x. f. 13 Southern shores of England, rare.Length a quarter, and breadth half an inch ; chesnut, with a deeper colouredcurved band from the hinge towards the longest side ; inside chesnut,margin plain one of the teeth ;large, the other small, in each valve.Gen. CXXI. TELLINA.—Shell transverse or suborbicular,with a flexuous plait at the posterior side ;hinge withtwo teeth in one or both valves ;lateral^ ones generally remote.* With two teeth in one valve, and the shell oval.478. T. fragilis.— Transversely ovate, subsulcated by thelayers of growth ; retrally truncated.Penn. Brit. Zool. iv. 86. t. xlvii. f. 26— English shores.Length nine-tenths, breadth one inch and three-tenths ; white ; the leftvalve largest ; the striae wrinkled behind the fold ; indistinct longitudinalstriae, and some minute oblique ones, apparently confined to the cuticle ;insidestriated near the margin at which the shell is slightly bevelled ; an indistinctridge irom the beak to the posterior muscular impression ;no lateralteeth. The specimens in my possession which agree with the figure in44British Zoology," have the teeth indistinct.