1-86 Miscellanies. 



Melania inflata, Virginia. 

 " plicata, Bengal ? 

 " pJicifera, W. of the Rocky Mts. 

 " Troostiana, Tenn. 

 ^Paludina pallida, Ohio. 



" Nickliniana, Virginia. 

 " sinistrosa, East Indies. 

 " nuclea, W. of the Rocky Mts, 

 " Nidtalliana, " 



" vircns, " 



Ampullaria Pealiana, Colombia, S. A. - 



The volume includes, likewise, a series of very interesting- observafioTss 

 upon the anatomical structure of the Naiades, illustrated by plates ; from 

 which we perceive that Mr. Lp^a is convinced that these animals are not 

 androgynous, as has heretofore been believed in Europe, but, on the con- 

 trary, have the sexes in different individuals. He notices, under these 

 remarks, with suitable commendation, the ingenious memoir of Dr. 

 KiRTLAND, of Ohio, on the same subject.* The work is concluded by a 

 very valuable synopsis o( Naiades^, in which the embarrassing synonymy 

 of this family is cleared up with the author's usual address. It contains, 

 according to this review, 323 recent species, as admitted, (rank and file,) 

 29 unknown to the author or doubtful, (rnissing,) and 22 fossil, (dead.) 

 Of the subgenus Unio, there are 235 species in a recent state, and 20 

 \vhich he has not been able to admit as certain. Of fossil species 21. 

 Of the subgenus Margaritana, there are 20 admitted species and 2 un- 

 known. Of the subgenus Dipsas, 2 recent species. 0( Anodonta, 58 

 admitted, 7 unknown, and 1 fossil, which is doubtful. Of Iridina, 2 re- 

 cent species : and of Spatha, 6 recent species. C. U. S. 



' 10. North American Hcrpetology ; or a Description of the Reptiles 

 inhabiting the United States ; by John Edwards Holbrook, M. D., Pro- 

 fessor of Anatomy in the Medical College of the State of South Carolina, 

 Member of the Royal Medical Society of Edinburgh, &c. tStc. Vol. I, 

 quarto. Philad. 1836. pp. 120 ; and Vol. II. 1838. pp.125. With 

 colored engravings. 



This is a second great work on natural history from the Philadelphia 

 press, concerning which we have long owed a notice to the scientific 

 public. Its merits are, however, of so high an order, as to stand in very 

 little need of commendation, and the volumes before us give the best as- 

 surance that the remaining ones will be executed with equal ability. To 

 distant subscribers, it may be of some consequence to be informed of the 

 progress which Dr. Holbrook has made in his undertaking— a task, to 



* See this Journal, Vol. XXVI. 



