THE NAUTILUS. i. 
to the palliata than the appressa. ‘The species may be diagnosed as 
follows : 
Polygyra (Triodopsis) subpalliata u. sp. Shell depressed, thin, 
pale green or buff-green, somewhat translucent. Surface shining, 
minutely roughened by narrow granules elongated in the direction 
of growth-lines. Spire convex, composed of slightly over 5 convex 
whorls, the last rounded at the periphery, deflexed in front, and 
very deeply constricted behind the lip. Aperture oblique; outer 
lip flatly reflexed, white, wide, the arcuate basal lip bearing a long 
plate-like callus, as in H. palliata; parietal wall bearing a large, 
high, curved tooth, like that of H. palliata. Alt. 92, diam. 15 mill. 
(largest specimen). Alt. 7, diam. 13 mill. (smallest specimen). 
DALL’S TERTIARY MOLLUSKS OF FLORIDA.! 
This second volume of Dr. W. H. Dall’s great work upon the 
Tertiary Mollusks of Florida is much wider in scope than the pre- 
vious part, including much matter upon other East American 
faunas of the same epoch, notably the Pliocene of the Carolinas. 
The introductory chapter graphically describes the series of changes 
of shore line and elevation of our southeast coast, from the close of 
the Eocene to the present time; and this has been noticed and 
quoted from in a previous number of the Nauriuus. 
The systematic enumeration and description of species occupies 
the greater portion of the work, the subject being completed down 
to the Pelecypods, which will form the third part of the work. 
The new genera and subgenera proposed are as follows: Glypto- 
styla (type G. panamensis Dall), a peculiar form like Pyru/a outside 
but ponderous and with the plaits of Latirus. Trachyodon, new 
subgenus of Chiton for C. eocenensis Conr. 
The generic synonymy of Vivipara is worked out in full, the 
author concluding that Vivipara (Martini) Lamarck, has priority 
over the very bad masculine form, Viviparus Montf., which has 
lately been adopted by English authorities. Incidentally the his- 
tory of the name Bulimus is discussed, and shown to be totally 
inapplicable to the genus of land snails generally known by that 
name. Clava, of Martyn, is used as a generic name to supercede 
1Transactions of the Wagner Free Institute of Science of Philadelphia, vol. 
3, pt. ii. Issued January, 1893. 
