36 
THE - CONCHOLOGISTS’ : EXCHANGE 
NECROLOGY 
Carl Oscar Hamnstrom, Swedish botanist, 
died July 5, 1886. 
Dr. Charles Robert Bree, British ornitholo- 
gist, died October 17,1886. 
Mr. J. S. Harrison, microscopist, died Oc- 
tober 6, 1886. at Malton, England. 
Paul Bert, physiologist, died last November 
in the 54th year of his age. 
The death of Rev. W. Downs, F. G. S. the 
distinguished geologist and botanist, is an- 
nounced. 
The death of Dr. Joseph G. Richardson of | 
Philadelphia, an eminent microscopist is an- 
nounced; aged 51 years. 
ANSWERS TO CORRESPON- 
DENTS 
W., Toledo, O. | Your supposition that Jan 
was a Swiss writer is correct. 
S.C. Tritiaria is a fossil genus occurring 
in the Miocene formation, Virginia. The 
specimem sent was of recent origin. 
J. A. B. Ceylon would be a possible local- 
ity for your specimens as they both hail from 
India, East Indies, ete. Pyrosus should be 
Pyrazus. 
Halia. The genus Halia is a synonym for 
Buccinum and was adopted by MacGillivray. 
Please consult a standard work for answers to 
your other questions. 
PUBLICATIONS RECEIVED 
The American Monthly Microscopical Jour- 
nal—The West America Scientist—The Cana- 
dian Entomologist—The Microscopal Bulletin 
and Science News—The National Educator. 
Bulletin of American Museum of Natural 
History. Vol. 1, No. 8, from’ A Woodward, 
Librarian. 
Con ; 
Exchange Column 
Exchanges which are merely indirect offers of arti- 
cles for money, will not be accepted. 
We wil! not hold ourselves responsible for any mis- 
takes or disappointments occurring because of bad faith 
on the part of any of our exchangers. 
Terms, which must be cash with order, are as fol- 
lows: Exchanges of 20 words, including address, 10 
| cents; for each additional 10 words the charge will be 
5 cents. No exchange will be inserted for less than 10 
cents. 
75 cents per annum for a monthly exchange of 20 
words ; $1.00 per annum for a monthly exchange of 30 
words, with privilege of change each month, 
EXCHANGES IN MOLLUSCA 
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, Iowa. 
-OFFERED:—Trivia Californica, Gray; Crepidula 
navacelloides, Nutt., adunca, Sby. Mopalia muscosa, 
Gld., Stenoradsia magdalensis, Rve., Tonicella lineata, 
Wood, Lepidopleurus Cooperi, Cpr. Trachydermon 
pseudodentiens, Cpr. Haliotis Cracherodi, Leach, 
rufescens, Swains; Mytilus Californianus, Con.; Pach- 
ydesma crassatelloides, Con.; ‘Tapes staminea, Con.; 
Schizotheurus Nuttallii, Con.; Saxodomus Nuttallii, 
Zirphaza crispata, L. Helix Traskii, Nwe; 
Physa politissima, Tryon; for wants in Mollusca. 
GEO. W. MICHAEL, Jr., Morro Bay, Cal. 
NUMEROUS duplicates of European Land, Fresh- 
water and Marine shells to exchange for American 
Land and Fresh-water Shells. GF. ANCEY, 
Marseilles, France. 
FOSSIL Land and Fresh-water Shells wanted; also, 
recent forms of Fossil genera, British and Foreign. 
CHAS. MUSSON, 
23 Napperiy Hill, Nottingham, Eng. 
OFFERED:—Ceylonese Shells, including rare spe- 
cies of Helix, Bulimus, Cyclophorus, Cataulus, etc. 
Wantep:—Good Foreign or British Shells. 
Miss LINTER, Twickenham, Eng. 
OFFERED:—P. lineatus, A. fluviatilus, H. Cartu- 
siana, H. caperata var major and ornata, P. secale, B. 
perversa, C. Rolphii, and A acicula. Wanted, British 
land and fresh water shells. C. H. MORRIS, School 
Hill, Lewes, Sussex, Eng. 
