14. 
lactea. 
15; 
 «votunda- 
ta. 
16. 
flexuosa. 
Dr. Maros's and Mr. RACKETT’S 
Gmelin (who appears to have described too many 
species merely from figures) has placed this shell as a 
Venus,—an error to which he was led by indulging a 
conjecture only on Lister's plate, where the hinge is not 
represented. 
T. testa lentiformi gibba alba pellucida lævi. Linn. 
Syst. Nat. p. 1119. n. 69. Linn. Gmel. p. 3240. 
Gualt. Test. t. 71. f. D. 
Chemn. Conch. 6. t. 13. f. 125. 
Pulteney in Hutch. Dorset. p. 30. t. 5. f. 9. 
Montagu Test. Brit. ETOL S-A 
Habitat in mari, rarior. 
Testa diametro 3. poll., alba, convexa, -okt transversim striata, rugis 
nonnullis antiquata. Cardo in altera valvula constat dentibus duobus, 
in altèra dente unico. Distinguitur a cæteris quod sulcus ab umbone 
versus suturam decurrit. 
- First described by Dr. Pulteney. It is found on va- 
rious parts of the coast, but not common. 
T. testa subcohvexa arhoali velvulis bidentatis, dente 
altero bifido, altero divergente. 
Pulteney in Hutch. Dorset. p. 30. t. 5. f. 8. T. undata. 
Montagu Test. Brit. p. 71. t. 2. f. 3. : 
Habitat in mari. 
Testa interdum diametro 1 poll., subdiaphana, candida, striis transversis 
feré obsoletis; intus glaberrima, candida, cicatrice nulla. Umbones 
recurvi, prominuli. Testa V. undatc affinis, umbone vero minus pro- 
ducto, et dentibus duobus tantum. 
Found at Poole, Donet; and on the Cornish and 
DR Devonshire coasts. 
T. testa Serpe meris, sinu ‘ab umbone ad mar- . 
ginem decurrente. 
Donovan 
