OF CONCHOLOGY. 283 



Descriptions of Unionidce from the Lower Cretaceous For- 

 mation of Neio Jersey. By Isaac Lea. 



FOREIGN. 



BRITISH. 

 Conchologia Iconica. By Lovell Reeve. Parts 272, 273. 



Haminea. Plates 3-5. July, 1868. 



The new species are : — 



H. Guadaloupensis, Sowb. Guadaloupe. 

 " constricta, A. Ad. Hab — ? 

 " Sandivichensis, Sowb. Sandwich Islands. 

 IT. angustata, Gould MS., quoted from " Simonda, Western 

 States of North America," was published in Boston Proceed- 

 ings several years since, and the locality is Simoda, Japan. 



H. oryza, Sowb. Massachusetts. This is certainly the 

 Bulla oryza of Totten, Silliman's Journ, xxvii, 350, f. ft, 

 although Mr. Sowerby publishes it without reference to any 

 author. 



H. Novce Eborace, Sowb. New York. This is surely the 

 Bulla insculpta of Totten, and the species figured by Sowerby 

 as insculpta is the solitaria of Say — if indeed the two are 

 really distinct. 



H. Natalensis, Sowb. Port Natal. 

 Mycetopus. Plate 4. July, 1868. 



31. subsinuatus, Sowb. New Granada. 

 Hydatina. 2 plates. July, 1868. 

 Aplustrum. 1 plate. July, 1868. 

 Atys. 1 plate. 

 Unio. Plates 77 to 84. July, 1868. 



The improvement in the determination of the species noticed 

 by us in reviewing the last issue of the Iconica, still continues ; 

 Mr. Sowerby has, however, made a bad mistake in placing U. 

 grandidens, Lea, in the synonymy of Mya nodulosa, Wood. The 

 former being a true Unio from Arkansas, whereas the latter is 

 a Brisoclon, and of course of exotic habitat. The Cliama Blum- 

 bea of Chemnitz, referred to by Sowerby as probably represent- 

 ing the nodulosa, is not recognizable from the figure. Mr. 

 Sowerby's figure represents grandidens and not nodulosa. Mr. 

 Sowerby still refuses to recognize the genus Margaritana, merg- 

 ing its species with Unio, in several instances, in the present 

 publication. 



