do not use either our “Price List” or “ Ex- 
change column” but you can certainly afford 
to subscribe to our little paper if for nothing 
else than to see and hear how the other bees 
are hiving. We cordially invjte you to ask 
us questions and we will give you any infor- 
mation we possess. In conclusion we beg of 
you not to be dismayed if you see your ex- 
changes in the company of more advanced 
collectors. They certainly will have patience 
with you when they think of their own early 
struggles for recognition and reward. 
Arion subfuscus and Helix hispida var. | 
fusca in Yorkshire. 
On June 2d, 1886, I found three specimens 
of Arion subfuscus, Drap. in a Garden at 
Lofthouse. The species is well marked being 
of an orange-brown color the shield some- 
what brighter and clearer than the other parts. 
It is larger than a hortensis and it is surprising 
that the species has been so long overlooked. 
As it is apparently not rare it must have been 
taken for a yellow variety of A. hortensis. I 
sent the three specimens to Mr. Cockerell of 
Chiswick, who identified them for me. To- 
gether with a few other slugs and shells I sent 
a few specimens of Helix hispida which Mr. 
Cockerell states are Mencke’s variety fusca, 
well known on the Continent but which does 
not appear to be recognized in the British 
Isles —George Roberts, |.ofthouse, Wakefield, 
in “ Zoologist”” for August, ’86. 
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. 
ZONITES nitidus, Miill. 
B , volvoxis, Parr , elevatum, Say, multilineata, Say, 
exoleta, Binn. , thyroides, Say, Leaii, Ward, pulchella, 
Miill. Succinea, ovalis, Gld,, avara, Say. Limneza 
Helix Mooreana, W. G. 
palustris, Miill, Physa gyrina, Say, Forsheyi, Lea. 
Bulinus hypnorum, L. Segmentina armigera, Say. 
Melantho obesa, Lewis. Pleurocera subulare, Lea. 
Goniobasis livescens, Mke., carinifera, Lam., comalen- 
sis, Pilsbry. Unio subovatus, Lea. Anodonta ovata, 
Lea. JEROME TROMBLEY, 
Petersburg, Mich. 
OFFERED :—Unio Buckleyi, Lea, hebes, Lea, 
fuscatus, Lea. Strophia incana, Say. Oliva literata, 
Lam. Lucina floridana, Con, Modiola sulcata, Lam. 
50 species Florida shells. Wanted :—Monoceros 
grande, Gray. Turbinella pyrum L. Nassa grandiosa, 
Hds. Polygyra avara, Say, pustuloides, Bld. Tri- 
odopsis Hopetonensis, Shutt. Unio Kleinianus, Lea. 
Neptunea antiqua, L; Pisania pusio, L. Oliva Brazil- 
iana, L. Admete viridula, Fab. Conus figulinus, L., 
ammiralis, L., augur, Hwass. Malea ringens, Swn. 
CHAS. T. SIMPSON, Ogalalla, Neb. 
HAVING made several collecting tours to the West 
Indies, I have a goodly number of both marine and 
land shells for exchange. I can also furnish fine spec- 
imens of Unio Canadensis, Lea , which are found in 
this region. Address J. J. BROWN, M. D., 
Sheboygan, Wis. 
FIFTY species Ohio Unionidz and thirty species 
Ohio Helicide for species from South and West. 
Pror. E. T. NELSON, Delaware, O. 
OFFERED :—Liberal exchanges of Cape shells for 
specimens of Marine and Fresh-water shells from all 
parts of the world. 
MARY GLANVILLE, Grahamstown, So. Africa. 
WANTED :—From different localities, species of 
Goniobasis, Pleurocera and other genera of the Family 
Strepomatide, for comparison and study. Will ex- 
change other shells for them, either Land, Fresh-water 
or Marine. A. A. HINKLEY, 
DuBois, Washington Co., Ills. 
SWISS Land and Fresh-water shells offered in ex- 
change for British species. 
Dr. RUDOLPH HAEUSLER, 
128 Kensington Park Road, London, W. 
OFFERED :—Unio heterodon ; Margaritana undu- 
lata; Pisidium Adamsii, Virginicum, compressum ; 
Spherium securis, occidentale, Novi eboraci; Vertigo 
ovata and others. BYRON P. RUGGLES, 
Hartland, Vt. 
MICHIGAN shells to exchange for Land and Fresh- 
water species from other localities. 
BRYANT WALKER, 
Moffat Building, Detroit, Mich. 
OFFERED—Goniobasis comalensis, pleurostriatus ; 
Helix auriformis, texasiana, febigeri, mooreana, ber- 
landieriana, espiloca; Helicina tropica, occulta; Buli- 
mulus schiedianus,; mooreanus ; Gundlachia, Pyrgulop- 
sis, for fresh water shells. 
H. A. PILSBRY, Davenport, Iowa. 
