and Cape May, N. J.in May 1886. ‘This shell 
is not recorded as having been found north of 
South Carolina before. 
NECROLOGY. 
M. Bonley, President of the French 
Academy of Sciences, died November 20, 
1886, 
M. Rabuteau for twenty years a member of 
the French Biological Society is deceased. 
Captain Mangin, the inventor of the system 
of Optical Telegraphy now in use in the French 
Army, is dead of appoplexy at the age of 45. 
Dr. Thomas Andrews, F. R. S., the well- 
known Professor of Chemistry in Queen’s 
College, Belfast, is reported as deceased at the 
advanced age of 71. 
EXCHANGES IN MOLLUSCA. 
Exchanges which are merely indirect offers 
of articles for money will not be accepted. 
We will not hold ourselves responsible for 
any mistakes or disappointments occurring 
because of bad faith on the part of any of our 
exchangers 
Terms which must be cash with order, are 
as follows: Exchanges of 20 words including 
address, 10 cents; for each additional 10 
words the charge will be 5 cents. No ex- 
change will be inserted for less than Io cents. 
OFFERED—Goniobasis, comalensis, pleurostriatus ; 
Helix auriformis, texasiana, febigeri, mooreana, ber- 
landieriana, espiloca; Helicina tropica, occulta; Buli- 
mulus schiedianus, mooreanus; Gundlachia, Pyrgulop- 
sis, Tryonia, etc., for fresh-water shells. 
H. A. PILSBRY, Davenport, lowa. 
WANTED :—To exchange shells from the rivers, 
creeks, lakes and sloughs in the vicinity of the mouths 
of the Missouri and Illinois rivers. 
Hon. WM. McADAMS, Alton, Ills. 
FLORIDA shells, Land and Marine, for exchange. 
M. A. Mitchell, Waldo, Fla. 
var. albina, Gobantzi and others. 
WANTED :—North American Land shells. 
ALEX. VON TIESENHAUSEN, 
Bozen, Tyrol, Austria. 
WANTED :—Batches of Helices nemoralis and hor- 
tensis alive or dead. 
OFFERED :—Unio Margaritifer and others. 
B- HUDSON, M,C. 5S. 
5 Westbourne Grove, Coatham, Redcar, England. 
FOR EXCHANGE :—Rare land shells from Cey- 
lon; also new species of Bulimus from Mt. Roraima. 
Offers solicited. Miss LINTER, 
Arragon Close, Twickenham, England. 
OFFERED :—Unio Margaritifer, By. tentaculata, 
P. complanatus, H. nemoralis, hortensis and erice- 
torum. 
WANTED :—U. pictorum, L. auricularia, H. reve- 
lata, pisana, obvoluta, B. montanus, C. Rolphii, bipli- 
cata, Cy. elegans and others. 
T. A. LOFTHOUSE, 
67 Grange Road, Middlesboro, Eng. 
WANTED :—Correspondents for the purpose of 
exchanging Land and Marine shells of any. province. 
Over 150 West Coast species offered for anything new 
to me. HARRY E. DORE, 
r22 Front St., Portland, On. 
NUMEROUS duplicates of European Land, Fresh- 
water and Marine shells to exchange tor American Land 
and Fresh-water shells. GUE. ANGEY, 
Marseilles, France. 
OFFERED :—British marine shells for Land and 
Fresh-water shells. Specimens must be best of their 
kind. Mr. MARSHALL, Sevenoaks, Torquay, Eng, 
WANTED :—To correspond with colonial or foreign 
collectors, with a view to the exchange of shells 
C.L.S., 8 Trinity St., Hastings, England. 
Miscelianeous Exchanges for Mollusca. 
A fine lot of Fossil Ferns from Mazon Creek, 
Grundy Co., Ills., properly named, to exchange for 
Marine shells from the Southern Seas. 
J. E. CARR, Morris, Ills. 
TERTIARY fossils from Italy and other European 
States to exchange for American Land and Fresh-water 
shells. Dr. FRANCESCO COPPI, Modena, Italy. 
WANTED :—Pritish and Foreign shells. 
OFFERED :—Good Foreign stamps. 
THOS. W. READER, 
171 Hemingford Road, London, N. 
TERTIARY and other fossils from Southern States 
and Europe ; sospecies of Bird’s Eggs ; and 60 pounds of 
Minerals consisting of Amethyst on Agate; Agates 
rough and polished: Pyromorphite ; Native Copper; 
Zinc blende; Galena; rare Iron Ores, &c., &c., for 
strictly fine and correctly named Mollusca from South 
and Central America, Asia, Africa, and Australia. 
Addresss W. D. AVERELL, 
Chestnut Hill, Philada., Pa. 
