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 tlic 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. 

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

 Mytilus magnus nigrescens. Modiolus. Da Coda. Br. Conch. 



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

 Musculus papuanus authorum. Humph. Miis. tab. A^Q.jig. B. 

 M. Modiolus, Great Mufcle. Penn. Br. Zool. p. 1 13. 77. tab. 46. 



fg. 77. 

 Musculus papaunus. Adajis. Seneg. 1. t. 12. f. C. 



List. IL Conch, tab. 359. fg. 198. 

 Giialt. test. t. 91. LI. L. 

 Bumph. Mas. t. 46. /. B. C? Z>? 



H 4 



