Dall — Miocene and Pliocene of Martha's Vineyard. 297 



The writer recently visited Gay Head for the purpose of 

 studying this fauna, and subsequently examined all the mate- 

 rial collected at Gay Head and Chilmark in past years and now 

 preserved in the collections at Harvard College. In this in- 

 vestigation material aid was rendered by Prof. 1ST. S. Shaler 

 and Mr. J. B. Woodworth, U. S. G. S. 



The following species have been identified from the Miocene 

 of Gay Head and Chilmark ; the localities are indicated by G 

 and C respectively. 



Vertebrates. 

 Gystipthora sp. (Lyell) G. 

 Rosmarus sp. (Lyell) G. 

 Hyperoodon sp. (Lyell) G. 

 Balaena f sp. (Lyell) G. 

 Garcharodon angustidens Ag. G. 

 Lamna cuspidata Ag. G. 

 Hemipristis serra Ag. G. 

 Oxyrhina hastalis Ag. G. 



Numerous unidentified remains of esseous fishes. 



Crustacea. 

 Archaeoplax signifera Stra. G. C. 

 Archaeoplax f sp. ind. G. 

 Balanus {? proteus Conr.) fragm. G. 



Mollusks. 

 Pecten (irradians Lam. young ?) G. 

 Modlolaria nigra, Gray ? C. In gray clay. 

 Yoldia limatula Say. G. 

 Ybldia sapotilla Gould. G. C. 

 Nucula Shaleri n. s. G. C. 

 Astarte (like sulcata Da Costa) G. 

 Astarte (like semisidcata Leach) G. 

 Crassatella sp. G. 

 Cardium virginianum Conr. G. 

 Isocardia fraternaf Say. C. 

 Gemma purpurea Lea var. Tottenii Stm. G. 

 Venus (tiyesta) inoceriformis? Wagner. G. 

 Venus sp. G. 



Cytherea sp, (like Say ana Conr.) G. 

 Tellina (like lusoria Say) G. 

 Macoma Lyellii n. sp. G. 

 Solen sp. young, (like ensiformis Conr.) C. 

 Gorbula sp. (like disparilis Orb.) G. 

 My a arenarla L. G. 

 My a truncata L. G. (Lyell). 

 Glycimeris reflexa Say, (Panopcea). G. 

 Ghrysodomus Stonel Pilsbiw. G. 



