PLATE XXIII. 



MYTILUS MODIOLUS. 



GREAT MUSCLE, 

 GENERIC CHARACTER. 



The hinge toothless, and consists of a longitudinal furrow. 



SPECIFIC CHARACTER. 



AND 



SYNONYMS. 



Shell large, blackish : one side angulated near the middle, the other 

 straight ; but gibbous towards the beaks, and blunted or obtuse at 

 the upper end. 



Mytilus Modiolus : testa laevi, margine anteriore carinato, natibus 

 gibbis, cardine sublaterali. — Gmel. Linn. 

 Sj/st. Nat. Conch, p. 3354. Sp. 14. 



Mytilus magnus nigrescens. Modiolus. Da Costa. Br. Conch, 

 p. 219. sp. 49. tab. 15. fig. 5. 



Musculus papuanus authorum. Humph. Mus. tab. 46. fig. B. 



M. Modiolus, Great Mufcle. Penn. Br. Zool. p. 113. 77. tab. 46. 



A- 77 - 



Musculus papaunus. Adans. Seneg. 1. t. 22. f. C. 



List. H. Conch, tab. 359. fig. 198. 

 Gualt. test. t.9\. ILL. 

 Rumph. Mus. t. 46. /. B. C? Z>? 

 h 4 



