﻿Geology and Natural History. 325 



vey of New Jersey. Trenton, 1886. — This very valuable Report 

 contains descriptions, synonymy and figures of all the described 

 species of brachiopods and lamellibranchs in the formations men- 

 tioned, together with some that are new. The total number, 

 exclusive of the brachiopods (5), is 230. Of these, 5 are from the 

 Raritan clays below the Lower Marl beds, 163 from the Lower 

 Marls, 11 in the Middle Marl bed, 17 in the Cretaceous layer at 

 the base of the Upper Marl bed which is Eocene, 23 from the top 

 of the Upper Marl bed, and 12, species of Unionidse, from the 

 clays at Fish House. Only one species of the 163 in the Lower 

 marl, Gryphcea vesicidaris, is found in any of the other beds; 

 this species occurs also in the Middle Marl bed, besides which a 

 single individual has been found in the Eocene. " Very few of the 

 species have been recognized from localities outside of the State." 

 Of Brachiopoda, the only genera reported are Terebratula, Tere- 

 bratulina and Terebratella. Terebratella plicata is common in 

 the Gryphrea beds of the Lower Marls, while Terebratula Harlani 

 is in great abundance, in some places almost wholly constituting 

 beds several feet in thickness. The other species are rare. 



The five species of Lamellibranchs from the Raritan clays r 

 referred to the genera Astarte, Ambonicardia (new), Corbicida 

 and Gnathodon, have in part a Jurassic aspect, but the conform- 

 ably overlying beds all contain unquestionably Cretaceous fossils, 

 as Professor Cook states in his prefatory remarks. 



The plates of the volume are excellent. Mr. Whitfield has a 

 second volume in progress, devoted to the Gasteropoda and 

 Cephalopoda of the. same formations, which will soon go to press. 



3. JSTote on the recently proposed genus Billingsia y by S. W. 

 Ford. — Mr. J. F. Whiteaves having kindly brought to my notice 

 the fact that the above generic name, proposed by me on page 

 466 of this Journal for June last, was bestowed by M. De Koninck, 

 in 1876, upon a genus of compound corals from the Devonian 

 rocks of Australia, I propose to substitute for it the name Elka- 

 nia, based upon Mr. Billings' Christian name, Elkanah. 



4. A Catalogue of 'Minerals, alphabetically arranged, with their 

 Chemical Composition and Synonyms y by Albert H. Chester. 

 52 pp. 8vo. New York, 1886 (John Wiley & Sons). — This i& 

 a handsomely printed list of the mineral names now in use, in- 

 cluding synonyms and names of varieties ; after the name of each 

 species a general statement of the chemical composition is given. 

 Collectors will find this catalogue useful. 



5. Hooker's Flora of British India, Part xiii, just now 

 issued, commences the fifth volume, and carries it on to p. 240. 

 It com]: rises the Chenopodiacece, Polygonacem, Podostemonacea?, 

 NepenthacecB, Cyti?iaceo3, Aristolochiacece, Piperacece, Chloran- 

 thacece, 3fyristicacece (30 species of Myristica), Monimiacece, 

 Laurinem (16 genera, one of them of 64 species), Proteacece, 

 Thymeleacece, Elceagnacew, Loranthacece (with 58 species of Lo- 

 ranthus), Santalacece, Balanophorece, and the opening pages of 

 Euphorbiacece y all by Sir Joseph Hooker himself, who, relieved 



