THE CONCHOLOGISTS’ - 
VALVES. 
One of the associate editors of ** Conchologia 
Ceestrica,’’ is dead in the person of the vener- 
able Dr. Ezra Michener. 
We should be pleased to correspond with 
any collector having original information re- 
specting “Pearls,” their crowth, size and modes 
of collection. 
The Conchological Museum of the Academy 
of Natural Sciences contains 45,184 trays and 
written tablets and 165.858 specimens. (Report 
of the Conchological Section for 1886.) 
We know of nothing more beautifui to the 
and instructive to the mind than a cabinet 
eye 
of shells. They should be carefully selected, 
neatly arranged and proudly shown to all 
comers. 
Whitfield contributes two 
valuable articles to the ‘“ Bulletin of the Mu- 
seum of Natural History,’’ of interest to con- 
chologists, viz: ‘Description of Lymnza 
( Bulimnzea) megasoma,Say, with an account of 
Proffessor R. P. 
EXCHANGE 
9 
“The Collectors’ Association of Mt. Pulaski, 
Illinois,” which was organized June 19, 1887, 
is intended for collectors in all branches of 
Natural History, Philately and Numismatics, 
living in Mt. Pulaski and vicinity. The fol- 
lowing officers were elected at the first meeting: 
O. H. Phinney, President. M. F. Laushbaugh, 
Vice-President; O. L. Rankin, Secretary; V. 
P. Pumpelly, Librarian; T. R. Laushbaugh, 
Treasurer. We wish the Association all the 
success imayinable and trust they will soon be 
| able to possess a library and collection of their 
changes produced in the offspring by unfavor- | 
able conditions of life; and “ Notice of a new 
Cephalapod from the Niagara rocks of In- 
diana.” 
Upon a recent visit to Dr. W. H. Rush, of 
Philadelphia,we were much interested in some 
water-colors of shells in his collection. We have 
good reason to conclude from the abundant in- 
formation at the Doctor’s command that a work 
upon the Mollusca of the Atlantic coast of the 
United States would be very acceptable to sci- 
ence,and the Doctor is welcome to the sugges- 
tion. 
Dr. W. H. Rush, of Philadelphia, kindly 
informs us that Volta Couldiana was found 
in from 150 to 200 fathoms, 7 miles South-by- 
East of Fowey Rock Light, Florida. But 
three specimens were found. One of these 
is in the cabinet of the National Museum, at 
Washington, one in the Museum of Compara- 
tive Zoology, Cambridge, Mass., and one in 
Dr. Rush’s collection, where we had the 
pleasure of seeing it upon a recent inspection 
| of the Doctor’s fine cabinet. 
own. Societies for the intelligent study of 
Science should be universally encouraged and 
we hope the example of ‘‘The Collectors’ As- 
sociation” will be extensively followed. 
CORRESPONDENCE. 
SMITHSONIAN INSTITUTION, 
Washington, D. C., June 29, 1887. 
Editor Conchologists’ Exchange : 
Sir: Enclosed please find subscription to 
your little paper, for which I hope all prosper- 
aaa 
ity and progress. 
I may add as an item of news not without 
some interest, that the rare ARtra Fergusont 
of Sowerby, described and quoted as from 
* Panama’”’ (where it was probably purchased), 
has been found upon the Swan Islands, be- 
tween Cuba and Honduras, in the Caribbean 
Sea, by a recent collector of the National 
Museum. Conzmitra, Conrad, described as a 
fossil, is found living in the Antilles at con- 
siderable depths. The coloration of the new 
species recalls that of Aleta cedonulli. Mesor- 
Ayévs is another form from the same region 
until lately only known in a fossil state, while 
the discovery of Amzuszam Mortoni in the 
Gulf of Mexico, living, by the Fish Commis- 
sion, is another fact of the same sort. <A 
pretty little AZitra, about 3-8 of an inch long 
and sub-cylindrical, with beautiful wavy, close 
transvegse lirations, and a claret brown tint 
_ when fresh, has been named M/tra Rushi7, in 
of Dr. W. H. Rush, of Philadelphia. 
honor 
