186 Miscellantes. 
eyes Melanta inflata, Virginia. © 
eS plicata, Bengal? < oon 
‘“  plicifera, W. of the Rocky Mts. 
“ — Troostiana, toh ° 
Paludina pallida,.O * oie -" 
Wetnonn Virginia. ’ i 
. sthistrosa, East Indies. 
* - nuclea, W. of the ssa Mes. : 
Ne ropa : 
mpu ee Peatiana, Colombia, 8. A 
“The volume includes, likewise, a series of very interesting “cheervaiioli 
upon the anatomical structure of the Naiades, illustrated by’ plates ; from 
which we perceive that Mr. Lea, is conv inced that these animals are not 
androgynous, as ‘has heretofore been believed in Europe, but, on the con- 
irary, have the Sexes in different.individuals. He notices, under these 
remarks, with “suitable commendation, the ingenious memoir of Dr. 
Kirtanp, of Ohio, on the same subject." The work is concluded bya 
very valuable synopsis of 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, ( missing, ) and 22 fossil, (dead.) 
Of the subgenus Unio, there are 235 species in a recent state, and 20 
_ which he has as 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. Of Anodonta, 58 
ttec ,7 unknown, and 1 fossil, which is doubtful. Of Iridina, 2 re- 
pen geest Spatha, 6 recent species. US. 
10. North lduricon Hagel: or a Description of the — 
inhabiting the United States; by Joun Evwarvs Hotzroox, 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. &c. Vol. I, 
quarto. Philad. 1836. pp. 120; and Vol. IT. 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 
the 
distant subscribers, it may be of some consequence to be informed of. 
es ehith. Dr.  Housroox. has made in - undertaking —a task, to 
* See this Journal, ea =r > 
