434 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



of Fundy, or even on the coast of Maine, unless in a few shel- 

 tered spots. . . . Hence the character of its fauna, which is in- 

 dicated by the fact that many species of mollusks whose head- 

 quarters are south of Cape Cod flourish and abound in its 

 waters. Among them are the common oyster, which is es- 

 pecially abundant on the coasts of Prince Edward Island and 

 Northern New Brunswick; the quahog, or wampum shell; 

 the Petrfaolapholadiformis, which, along with Zirfea crispa- 

 ta, burrows everywhere in the soft sandstones and shales ; 

 the beautiful Modiola plieatula, forming dense mussel banks 

 in the sheltered coves and estuaries; Calllsta convexa,Cochh>- 

 desma leana, and Cumingia tellinoides / Crepidala fornicata, 

 the slipper limpet, and its variety unguiformis, swarming 

 especially in the oyster beds; JVassa obsoleta and Buccinnni 

 cinereum, with many others of similar southern distribu- 

 tion." He then adopts Verrill's hypothesis that this region 

 was formerly connected with the Bay of Fundy, allowing the 

 northward migration of the New England marine forms. 



A paper on the anatomy of Chiton, by Dr. Von Jhering, 

 in the Morphologische Jahrbuch, describes and figures cer- 

 tain points in the sexual apparatus, the kidneys, and the finer 

 structure of the muscles. 



The singular marine animal JYeomenia, which was by Tull- 

 berg regarded as either a mollusk or worm he was doubt- 

 fill which, though he thought it might be more properly re- 

 garded as a worm has been investigated by Von Jhering, 

 who compares it with Chiton, and considers it as belonging, 

 with Chiton, to his proposed order Amphineura. 



Mr. W. W. Calkins announces in the American Naturalist 

 that he has found llanella clathrata on the west coast of 

 Florida, at Cedar Keys. It occurred in shallow water, occu- 

 pying dead shells of Mercenaria mortoni ; also attached to 

 the pretty coral Oculina diffusa. The specimens have been 

 submitted to experts for identification, who find that it is a 

 Pacific or West Coast shell, not heretofore known to exist on 

 the eastern coast of North America, and adds another species 

 to the list common to both oceans. There are a few Crusta- 

 cea and fishes known to be common to the two shores, indi- 

 cating that in Tertiary times the Isthmus of Panama lay un- 

 der the ocean, as its geological structure shows must have 

 been the case. 



