or SELBORNE. IS 



Genus of Mytilis and the species of Crista 

 Gain ; called by Lister, Rastellum ; by 

 Rumphius, Ostreum plicatum minus ; by 

 D' Argenville, Auris Porci, s. Crista Galli ; 

 and by those who make collections cock's 

 comb. Though I applied to several such 

 in London, I never could meet with an 

 entire specimen ; nor could I ever find 

 in books any engraving from a perfect 

 one. In the superb museum at Leicester 

 house, permission was given me to exa- 

 mine for this article ; and though I was 

 disappointed as to the fossil, I was highly 

 gratified with the sight of several of the 

 shells themselves in high preservation. 

 This bivalve is only known to inhabit the 

 Lndian ocean, where it fixes itself to a 

 zoophyte, known by the name Gorgonia. 

 The curious foldings of the suture the 

 one into the other, the alternate flutings- 

 or grooves, and the curved form of my 

 specimen being much easier expressed 

 by the pencil than by words, 1 have 

 caused it to be drawn and engraved. 



