a | 
No 
THE - CONCHOLOGISTY’ - EXCHANGE. 
nanas, the kind of food which it at present 
prefers to any other. Dead shells of the same 
species have been found among bananas in 
Boston on one or two occasions, but they were 
all much inferior to the Providence specimen; 
a fact which seems to show that life in a New 
England grove is as beneficial to tropical land 
species as Northern waters are to those trans- 
ported from Southern Seas. 
Other well known - species 
North in various ways, 
feet and among the feathers of migratory water 
birds. But the larger portion, perhaps, are 
associated with the young oysters annually 
taken from the Chesapeake and adjacent points, 
for transplanting in the colder waters of New 
York and New England. Among these, 47ca 
pexata, Littorina trrorata and Mytilus hamatis 
are the most-abundant. These also attain a 
a larger growth and greater perfection of form 
than their kindred have ever reached in the 
habitat which originally claimed them all; a 
are carried 
many of them on the } 
result that seems “passing strange’? when we 
remember that boreal species, as a rule, deteri- 
orate the more, the further South they come. 
exchanges. 
Terms to NON-SUBSCRIBERS, which must be 
cash with order, are as follows: Exchanges of 20 
words, including address, 10 cents; for each addi- 
tional 10 words the charge will be 6 cents. No ex- 
change will be inserted for less than 10 cents. 
Offered.—Nuttalliana scabra; Stenoradsia Magda. | 
lensis; Jschnochiton Cooperi; Tonicella lineata; 
Mopalia Hindsii; Crepidula rugosa, navacelloides, 
adunea; Amphissa corrugata; Ocinebracircumtexta. 
G. W. MICHAEL, JRr., Morro, Cal. 
Offered —Land and fresh-water shells for same | 
EDW. D. KEITH, Moore St., Providence, R. I. 
Offered.—Botanical specimens for shells if in good 
condition. No dead shells wanted. T. G. BRINTON, 
755 Corinthian Ave , Philadelphia, Pa. 
ern jand and fresh-water shells List sent on appli- 
eation. Also, good general curiosities in exchange 
for land shells. THOS. E. ADDY, 54 N. Franklin 
St., Janesville, Wis. 
Offered.Unio Anodontoides, Lea; Helix Berlan- 
dieriana, Mor., Texasiana, Mor., thyroides, Say, lep- 
| orina, Gould; and other Texan shells for offers in 
Shells. W.W.WESTGATE, Houston, Texas. 
Wanted.—Correspondents interested in the study 
, of the Mollusca of Colorado, Wyoming, Utah, Ari- 
| zona, New Mexico, Kansas, Indian Territory and 
Nebraska. 
THEO. D. A. COCKERELL, West Cliff, 
Col. 
Offered.—_Knorr: Horens en Schelpen; Sowerby : 
Thesaurus, Monograph Veneridee. Wanted.—Vol- 
umes of American Journal of Conchology, or other 
conchological books. M. M. SCHEPMAN, Rhoon, 
near Rotterdam, Holland. 
Five specimens of the fossil Leda truneata from 
the clays of the Champlain Period in Maine, for 
offers. CHAS. A. DAVIS, Prof. Nat. Science; Alma, 
Mich. 
" Wanted.—North American ‘Land ‘Shells and Ter- 
tiary Fossils for recent Shells. D. W. FERGUSON, 
138 Wilson St., Brooklyn, (E. D.) N. Y. 
$1.00. 
OFFER NO. 8. 
10 Species (25 Specimens) of Choice 
Shells 
Sent by mail, securely packed, for $1.00. 
126. Cerithidea decollata, L., Eastern Africa. 
*127. Nassa Cooperi, Fbs., Monterey, Cal. 
*128 Fluminicola Nuttalliana, Lea, Oregon. 
*129. Cyclostoma sulcatum, Drap (var.), Sciac- 
ca, Sicily. 
130. Limnophysa bulimoides, Lea, Cala. 
131. Registoma grande, Gray, Zebu, Philip- 
pines. 
132. Paludina zonata, Hanley, Mauritius. 
*133. Lithasia armigera, Say, Nashville, Tenn. 
*1 34. Pomatias Strobeli, Pini, Veneto, Italy; 
and 
135. Trochonanina percarinata, v 
Lake Nyassa, Africa. 
Martens, 
THE CONCHOLOGISTS’ EXCHANGE, 
Chestnut Hill, Philadelphia. 
* These will overrun in number. 
bers date from Offer No. 1. 
The num- 
