TELLINA. 151 



GIBBOUS TELLEN. 



13. Tellina gibbosa. T. testa subtrigona, ventricosa, subtiliter iransver- 

 sim striata ; cardinis dente laterali valido. Linn. Gmel. p. 3231. 



Shell somewhat triangular, ventricose, finely striated transversely ; hinge 

 with a strong lateral tooth. 



Gualt. Test. pi. 77. f. Q. 



A heart-shaped shell, of a whitish green colour, 

 much inflated, and bending inwards on both sides; 

 hinge with a single primary tooth. Length three quar- 

 ters of an inch, breadth the same. Described only by 

 Gualtieri. 



UNEQUAL-SIDED TELLEN. 



14. Tellina inaequilatera. T. testa aquivalvi, subrotunda, alba, striis 

 versus marginem nonnullis transversis. Linn. Gmel. p. 3231. 



Shell of equal valves, roundish, white ; with a few transverse striae to- 

 wards the margin. 



Gualt. Test. pi. 88. f. C. 



This is an obscure species, described by Gualtieri, 

 but very indifferently defined. 



KNORR S TELLEN. 



15. Tellina Knorrii. T. testa splendide rubra, margine violacea. Linn. 



Gmel. p. 3231. 

 Shell bright red, with a violet margin. 

 Knorr Vergn. 5. pi. 21. f. 5. 



This species, which has been named after its disco- 

 verer, is an inch and a quarter long, and two inches 

 broad. Its country is not mentioned. 



