380 Miscellanies, 



Hamulus onyx., (generic eharacter as follows ; tubular, regular, In- 

 voluted ; volutions distinct ; aperture circular.) Lynch's Creek 

 South Carolina. 



Astacus, Delaware. 



Cassidulus cequorew, Prairie Bluff, Ala. 



Scutella Roger si, Monroe county, Ala. 



Ananchytes cinctus. New Jersey. 

 jimbriatus, 



Flustra sagena. New Jersey. 



Eschara digitata, 



Alveolites cepularis, 



Vermeius rotula. New York. 

 Dr. Morton relinquishes his ScapJiites Cuvieri, on the ground of its 

 identity with the S. hippocrepis of Dr. DeKay, previously described. 



In concluding the Synopsis, Dr. Morton remarks upon the simi- 

 larity between the testaceous mollusca of the eastern and western 

 shores of the Atlantic ocean ; and gives, with the assistance of Mr. 

 Conrad, a list of the recent shells known to both continents. They 

 are as follows : Purpurea lapillus, Buccinum undatum, Natica can- 

 rena, Fusus islandicus, Cyprena islandicu, Saxicava rugosa, Luci- 

 na divaricata, Phojas crispata, P. costata, Solen ensis, Mya arena- 

 ria, Mytilus edulis, Modiola papuana, Mactra deaurata, Spirorbis 

 7iautiloides, Thracia convexa, Solecurtus fragilis, Glycimeris sili- 

 qua, Cardium grcenlandicum, C. islundicum, Strigilla carnaria, 

 Tellina punicea, Pecten islandicus, BaJanus ocularis. 



To this catalogue he subjoins the fossil shells common to the strata 

 of Europe and America. Thus in the Upper Marine or older Ph- 

 ocene, we have the Lucina divaricata Lam. Cerithium melanoides, 

 Sow. Ostrea virginiana Gmel. Bulla acuminata Sow. Venus rus- 

 tica ? Sow. Pectunculus subovatus Say. Panopaa Faujasii : in the 

 Eocene or London Clay, the Corbis lamellosa Lam. Cardita pla- 

 nicosta Blain. Bulimus terebellatus Lam. Solarium canaliculatum 

 Lam. Fistularia elongata Desh, and in the Cretaceous Group, the 

 Pecten quinqueco status. 



Li view of the resemblance in existing species between the two 

 coasts, Dr. Morton asks, is it not probable that this accordance was 

 formerly as great as at present ? Although the identical species are 

 not numerous, yet the similarity in the general type is most evident, 

 both in the Testacea and in family of Saurians. He therefore very 

 justly infers, and the conclusion is a fine exemplification of the inte- 

 resting nature of geological deductions, " that when the chalk fossils 



