
616. ANSWERS TO CORRESPONDENTS, ETC. 
GEOLOGY. 
FossıL TuBULARIAN. — Dr. P. Martin Duncan has discovered, con- 
jointly with H. M. Jenkins, a new genus of tubularian Hydrozoa from the 
Carboniferous formation. It is called Paleocoryne, and was described in 
a paper read at one of the late meetings of the Royal Society. Palæo- 
coryne is a new genus containing two species, and belongs to a new fam- 
rian formation, and with the rarè Medusoids of the Solenhofen stones. 
— Popular Science Review. 
——9Ó— —— 
ANSWERS TO CORRESPONDENTS. 
A. E. T., Springfield, Ohio. — Your aquatic plant is a Bladderwort ( Utricularia inter- 
media), one of m many species found in - United States in ponds, either floating free or 
margin of the water. The name is ive 
rooting in the mud' on ) the m derived from the little 
Madders 4 Mri sup tinafloating pio sedi The flowers are very pretty, usually 
yellow, Api some e'spocies eges seen Sy D. R 
S. est work on American Neuroptera is Hagen's Synopsis 
of the poe blithe Dy the Fa iar TAO It may be ba - the 
Naturalist’s Book D est acc Seed iE our Orthoptera is 
Harris's Treatise on Inse pant Tun ious «4 Veget ; he pure venae Testitution eae 
also recently. published Mr. Scudder s List of ‘Ort very necessary for 
which is 
the student. We have observed cater lar parent y fanda! in winter r. Please send 
us à specimen of the M m like lar æ found peg ae — side of the wo 
so that we c. ve ap dria ot kno t Vanessa Antiopa fed on 
Indian corn, or tha t (EL dema e concinna "t ok the Te on exvorplilars will some- 
times change their foo 
- _ R. B., Newbern rige ua e spiders are Epeira riparia Hentz, and E. cancer Hentz. | 
The eggs of the M atter, enclo. The spi a rection vel yellow cocoon, pet out bh M (ie 
The 39 0E were of the rounded form of Æ. quigaris, differing greatly from the angular, 
spiny, transversely oblong form of the adul 
PEE O 
BOOKS RECEIVED. 
is. By J. A. Allen. Bulletin of the Museum of Comparative Zool- 
Mammalia Dow wi rera Arme a 3 
ogy. VE. bridge. 1869. 8v. 43-25: 
Address delivered on dm Cent. vidoe Hi ennial Anniversary of the birth of Alexander von Frum iS 8O, 
E m a mnes of the Boston Soeiety of Natural History,by Louis Agassiz. Boston 




oy ihe Echimi nd di ater between Cuba and the 
de ju pus dene Prey A pestes Agassiz, Bu ‘Bulletin of of the Museum 
ambridge. a 253-361 
vla PS dS Imp. “Zoot, d Arcis ation. Sept., Oct., pe Nov, 1869. Svo, 
n & Neu Noe Carnis Terrestrial Mottusc, By J ,M.D. 8vo, pp. 2. 3 
D man E from the Ane st Coast PG da ete. By J. G. Coopers — 
i Te ak, of Übsere ations on the Genus Unio, 
By 4to, i a gi 
wits es M.D. With illustrations, New York, —— 
m e Gubet. 





