114 THE AMERICAN MONTHLY _ [May 
79. MICROCODIDES. 
Corona as broad as the body; movements jerking................. robustus* 
Corona small; body barrel-shaped; movements slow.............. doliaris* 
80. OCTOTROCHA. 
One species; from China. i ee speciosa. J., 1893, 146 
81. GASTROPUS. Weber, 752.+ 
One species.’ Body Tose color ee eee stylifer 
*Jour. Quekett Micros. Club, 1895, 120. 
+ Weber in this genus includes Notops ruber, N. pygmzus, N. 
minor, N. hyptopus, Notommata hyptopus, Sacculus orbicularis. 
ERRATA. 
p. 89, 8th line from bottom; for 70, read 7. 
90, 12th line from bottom; for 28, read 27. 
97, 8th line from bottom and a few other places the specific 
names should not commence with capitals. 
100;,1st and 2d lines from bottom, transpose reference marks. 
102, 19th line, for ‘‘with three teeth,’”’ read ‘‘in a ‘tube.”’ 
Microscopic Preparations llnstrating the Minn Structure 
of Vegetable Life. 
Being enclosed in a novel transparent envelope, these objects may 
be examined without removal before mounting. They are prepared’ 
with the utmost care by WALTER WHITE, England, and are mostly 
stained in one or two colors of the most permanent character. 
A friend says: The sample section is exquisite. It is so good 
that I want more. As a well-cut and well-stained section it is 
equal to anything I have seen in that line. 
PRICRS. 
Catalogue of 172 objects, - - - $0.02 
Single specimens, - - - - - .08 
20 specimens, assorted, - - - 1.00 
CHAS. W. SMILEY, Washington, D. C. 
