1038 PATELLA. 



and pearly. Martini and Schroeter have confounded this 

 species with P. intorta, and they together constitute the 

 P. Pectunculus of Gmelin. 



TRANQUEBARiCA. 49. Shell depressed, with crowded 

 very fine longitudinal striae, and white scales ; 

 summit slightly recurved, and the base ovate. 



Patella Tranquebarica. Gmelin, p. 3714. Schreibers 



Conch, i. p. 348. 

 Patella, No. 38. Schroeter EM. ii. p. 457. 

 L'Oiseau-mouche. Favanne, i. p. 495. t. 1. f. R. 

 Lister Conch, t. 530. f. 8. Martini, i. p. 147. 1. 12. f. 1 14. 



Inhabits the coasts of Tranquebar. Martini. Batavia. Fa- 

 vanne. 



The length of the base is about seven or eight lines, and the 

 shell is thin, pellucid, of a chestnut-colour marked with white 

 scales or spots, and blue or white about the summit, where 

 Favanne says the colours are as brilliant as those of the crest 

 of a humming bird ; the muscular impression is brown, and 

 the remainder of the inside white and pearly. 'Martini says 

 the summit is slightly recurved, but neither Favanne or 

 Schreibers have placed the species in this division. 



MAMMlLLARis. 50. Shell couical, sub-pellucid, 

 finely striated longitudinally, and the sum- 

 mit reflected ; base oblong, and the margin 

 entire. 



Patella mammillaris. Linnaus Si/st. Nat. p. 1259. Mar- 

 tini, i. p. 111. t. 7. f. 58 and 59- Born Mus. p. 422. 

 Schroeter EinLn. p. 416. Gmelin, p. 3709- Schrei" 

 hers Conch, i. p. 352. 

 Patella grisea. Gmelin, p, 3727. 

 Le Mouret. Adanson Senegal, p. 34. t. 2. f. 5. 

 Le Teton de Venus. Favanne, i. p. 522. t. 3. f. F 1. 

 Lister Conch, t. 537. f. 17- Klein Ost. t. 8. f, 1. 



Inhabits the Mediterranean. Linnaus. Coasts of Africa, 

 Lister. Island of Goree. Adanson. St. Domingo, Mar- 

 tinique, and the Falkland Islands. Favanne. 



Favanne has described a specimen from the Falkland Islands, 

 of which the base measured about seventeen lines long and 

 fourteen broad, but the usual length is from half to three- 

 quarters of an inch ; the shells vary considerably, both in 

 their thickness and markings ; the summit is generally white, 

 and the sides either whitish grey or brown, or mottled with 



