Astronomy. 411 
their localities, distinguishing the extinct species; and mammals of spe- 
cial districts, as Spitzbergen, Nova Zembla, Greenland, Iceland, Sweden 
France, Sahara a, i &c. North America is given under eight districts 
exclusive of Mexi 
work of so nie value, published in a style which precludes a re- 
turn for the outlay, should have a place in the libraries of all who wish 
to encourage research in the cognate fields upon which = pepe 
yey! is understood to be en 
. Observations on the Genus Uvio, together with Deeeviptions ofan 
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146 pp., 4to, with 24 plates. Philadelphia. (Read before the Academy 
of Natural Sciences of Philadelphia, and published in their Journal.)— 
This volume is the eleventh in Dr. Lea’s series on ‘the Unionide. Like 
the preceding, it contains very large additions to the nu ‘eins of species, 
and is beautifull ly and generonly “lhe The introduction states 
that the number of new species of Unionide here described is 180, and 
Th 
the Southern States, a few from Western Asia, and Lake Nyassa in Cen- 
tral Africa. The univalves are mostly of the U. States, but some are 
from Central America and Asia 
- An Inquiry into the Zoological prc ng ei te Lashes discovered 
traces of Fossil Neuropterous Insects in with Remarks 
on the difference of structure in the wings of levong sng’ Noadsiinars ; by 8. 
ScuppEr. 20.pp., 4to. From Vol. I of the Mem. of the Bost. Soc. 
Nat. Hist., Jan. 1865. The e paper discussés the characters of the fossil 
insects » from the coal rocks of Illinois, pe gay in vol. xxxvii of this 
; rm ee 
4to, Frotii vol. I of the Mem. of the Bost. Soc. Nat. Hist., Nov. 1866. 
7. Notes on the Zygenide of Cuba; by A. R. Grote. 18 and 38 
Pp., 8vo, with plates. From the Proceedings of the pastes ger So- 
ciety of Philadelphia, Part I, July, 1866, and Part II, Jan., 18 
Ivy. ASTRONOMY. 
