96 THe | CONCHOLOGISES? 
NECROLOGY. 
At Buftalo, N. Y., Professor Charles Linden, 
a well-known naturalist, aged 68. 
Professor Asa Gray, the eminent botanist 
and professor at Harvard College for many 
years, died at Cambridge, Mass., January 30th, 
1888, of paralysis, aged 77 years. 
At Philadelphia, February 5th, 1888, of 
asthma, Professor George W. ‘Tryon, Jr., in his 
50th year. Professor ‘lryon was the author of 
“Structural and Systematic Conchology,” the 
‘* Manual of Conchology,’ and many other 
kindred works, and was at the time of his 
death, Conservator of the Conchological Section 
of the Academy of Natural Sciences. A_ bio- 
graphical sketch of this world-renowned con- 
chologist will be printed later on in this paper. 
Gundiachia Ancylifomis Pfr. in Florida. 
CHAS. TV. SIMPSON. 
In looking over, a short time ago, a lot of 
small molJusea collected in Florida, and which 
I have never had time to carefully examine be- 
fore, I found three specimens of Gzzdlachia, 
which, when submitted to Mr. Harry A. Pils- 
bry, of Phila, were pronounced by him to be 
G. Ancyliforis, Pfr., a Cuban species that, so 
far as known, has not heretofore been reported 
from Florida. They were found ina small 
hammock near Palma Sola, in Manatee County. 
This little hammock, which was the head of a 
small stream that flowed into the Manatee Bay, 
was not over ten or twelve rods in diameter, a 
dense tangle of hardwood trees, vines and 
shrubbery. with a soil almost boggy. In this 
little spot [ made some remarkable discoveries. 
I here found Vertigo moliwn, Gould, Vertigo 
ovata, Say, Carychiuim exiguunm, Say, and the 
Gundlachia, which, so far as I know, have not 
been reported from this State, besides Azzcy/us- 
Suscus, WUald., a rare species ; a specimen of the 
new species Zonites dallianus, Pils. & Simp., 
and what is either a young shell of Zonztes 
cerinoideus, Anth., or possibly a new species 
and a very peculiar variety of Helix auriculata, 
Say.: The presence of the Gandlachia helps 
to strengthen the theory | advanced regarding 
the distribution of certain tropical species in a 
former articlt.—Ovgal/ala, Neb., Jan. 31st, 1888. 
| long distance into the lake at this place. 
EXCHANGE, 
Valves. 
Mr. E. W. Roper, of Revere, Mass., writes : 
‘* Did I write in my last letter of the specimens 
of Bulimius acutius, Mull, alive in my collection ? 
Three out of a lot sent me in 1886, and labelled 
Corfu, Greece, are still alive in a box, and do 
considerable crawling around.” 
Corrections, November Number: Page 68, 
col. 1, line 17, for “ Valenctennt, Crosse,” 
read Valenciennest, Crosse. Crosse spelled 
the name differently from Webb and Van 
Beneden. Page 68, col 2, line 27, for not 
English authors,” read #zos¢ English authors. 
Mr. 1. A. Pilsbry, formerly of the Davenport 
(la.) Academy of Sciences, is now connected 
with the Academy of Natural Sciences, Phila- 
delphia, as Professor ‘Vryon’s assistant in the 
Conchological Section. 
Mr. W. W. Westgate, of Houston, Texas, 
writes: ‘I have been following Dr. Sterki’s 
advice about collecting small shells, and the 
result was amazing. Ihave secured shells so 
small that I have to use a good glass to see 
them at all.” 
Mr. Joseph Anderson, of Muskegon, Mich., 
writes: ‘* There is.a long dock built of slabs, 
edgings, etc., from the mills, which extends a 
Near 
the outer end, in about 10 feet of water, a space 
about 20 feet wide was left, which is spanned 
by a bridge. It was under this bridge that I 
found a colony of Unio alatus, Say. They 
were found on the bottom as close together as 
they could be packed. I dived to the bottom 
and filled a fruit basket before coming up. 
Thus I took out about 600, and there are hun- 
dreds left. Steamboats are constantly passing 
under this bridge, causing a strong current to 
flow throngh the opening, which led me to 
think that I would find them in the river, but I 
have been unable to find any outside of the ter- 
ritory named above. I have found but one 
locality where Jargazitana complanaia, Say, 
can be found, but as the bottom is so full of 
logs and sticks they are hard to get, and after 
I get them over half prove to be worthless.” 
