264 
ZOOLOGICA|;i LITERATURE. 
One or two spedes of all the genera mentioned^ except Mese- 
schiza, are figured on plate 7. 
Tryon, G. W. Synonymy of the species of Strepomatid(B, a 
family of fluviatile Mollusca inhabiting North America. 
Proc. Acad. Nat. Sc. Philad. 1865. 
This paper completes the series of papers on the same sub- 
jeet, and contains a revision and correetion of the preceding, 
published in the last two volumes of the same journal. The 
whole has been published as a separate work, ^ Synonymy of the 
Strepomatidce/ New York, 1865, 8vo, ineluding several other 
papers on land- and freshwater shells of the same author pre- 
viously published in the same Proceedings. 
. Synopsis of the species of Strepomatidce^ a family of 
fluviatile Mollusca inhabiting North America. Proc. 
Acad. Nat. Sc. Philad. 1865, pp. 19-36. 
About five hundred species of North American Melanidce are 
distinguished. The following genera are adopted : — lo 2 sp. ; 
Pleurocera (Raf.) = Me^ara (Ad.) 83 sp. ; Angitrema (Hald.) 
=^Lithasia (Ad.) 12 sp. ; Goniobasis (Lea) 274 sp. ; Eurycoelon 
(Lea, Proc. Nat. Sc. Philad. 1864, p. 3, type G. umbonata) 8 sp. ; 
Mesfischiza (Lea) 1 sp. ; Scfdzostoma (Lea) 29 sp. ; Anculosa 
(Say) 33 sp. 
. Monograph of the family Btrepomatidce, Am. Journ, 
Conch, i. pp. 299-342. 
Contains condensed descriptions of the American species of 
Melanid(B, extracted from a much more detailed memoir pre- 
pared for the Smithsonian Institution, the present paper being 
published principally to facilitate the determination of speeies : 
— lo 5 sp. ; Pleurocera 86 sp. ; Angitrema 12 sp. ; Lithasia 
17 sp. ; Strephobasis 8 sp. ; Meseschiza 1 sp. ; Schizostoma 
26 sp. ; Eurycoelon 8 sp. ; all figured in woodcuts. 
. Observations on the genus lo. Am. Journ. Coneh. i. 
pp. 41-44, with pis. 3 & 4. 
The author commences with some historical remarks. Shells 
of this genus have been found in the graves of the aborigines, 
and were erroneously supposed to testify that these aborigines 
must have come over the sea,^^ because they seemed to be 
marine shells. The eight speeies described in 1860 by Lea as 
forming a distinct group of this genus are excluded by the 
author as immature shells of other genera, and the twelve re- 
maining species reduced to five — lo fluvialis (Say), inermis 
(Anthony), spinosa (Lea), brevis (Anthony), and turrit a (An- 
thony). These and the principal varieties are figured, most of 
them drawn from the typical specimens. 
