NATURAL SCIENCES OP PHILADELPHIA. 449 



Etelis carbunculus Giinther, Catalogue of the Acanthopterygian Fishes, &c, 

 vol. i. p. 79. 



6 

 D. X. 11. A. III. 8. Scales 50* (Giinther.) 



14 

 The color is a brilliant red in life, with shining golden lines along each row 

 of scales. 

 Habitat. Seychelles and Isle of France (Cuv. et Val., Giinther). 



Etelis oculatus Gill ex Cuv. et Val. 

 Serranus oculatus Cuv. et Val. Histoire Naturelle des Poissons, tome ii. p. 



266, pi 32. Ramon de la Sagra. 

 Hesperanthias oculatus, Lowe. 

 Centropristis oculatus Miiller and Troschel. 



Macrops (aculeatus) Dumeril Ichthyologie Analytique, p. 279. 

 Anthias oculatus Giinther. Catalogue of the Acanthopterygian Fishes, &c. 

 vol. ii. p. 92. 



6 

 D. X. 11. A. III. 8. Scales 50-51 



14 

 Upper half of body rose, lower half straw yellow. 

 Habitat. Caribbean sea. 



To this species Messrs. Lowef and Giinther have referred a representative 

 of this genus found at Maderia, and Temminck and SchlegelJ another discov- 

 ered at Japan. I do not think that it is at all certain that those specimens 

 belong to the present species, and cannot, therefore decisively refer them to 

 the synonymy. 



Etelis coruscans, Val.g 

 Etelis coruscans Val , Comptes Rendus, tome liv. p. 1166, June 9, 1862. 



Body longer, head shorter, teeth smaller, dorsal spines shorter and caudal 

 longer than in E. carbunculus. 

 Habitat. Isle of Bourbon. 



After an interval of a third of a century, Valenciennes, again returning to 

 the genus Etelis, has added a supposed new species, only distinguished from 

 the E. carbunculus by the comparative characters here cited. He has failed 

 to recognize the affinity of E. oculatus. 



Description of a new Genus and Species of PHOLADIDiE. 



BY GEO. W. TRYON 3 JR. 



Subfamily JOUANNETIN^E, Tryon, 1862. 



Diplothyra, Tyron. 



Shell with a double accessory valve ; the principal plate placed directly over 

 the umbones, with a smaller anterior one adjoining. 



This genus is allied to Martesia ; but differs in the double or divided dorsal 

 valve. 



* Cuvier and Valenciennes assign about sixty scales to the lateral line and seventeen 

 or eighteen rows to the insertion of the ventrals. The former number includes the small 

 caudal scales. 



t Hesperanthias oculatus Lowe. Fishes of Maderia. This work is at present inacces- 

 sible to me. 



t Serranus oculatus Temm. et Schl. Fauna Japonica, Pisces, p. 5. 



gThe Comptes Rendus containing the diagnosis of E- coruscans was received after the 

 transmissioc of the above article to the Academy. 



1862.] 



