foe THE NAUTILUS. 
labor would be materially Jessened if authors would send him “ sep- 
arates” of their publications, as soon as issued, addressed to The 
Editor of the Zoological Record, Zoological Society, 3 Hanover Square, 
London W., England. 
DESCRIPTION D’UN PERIDERIS NOUVEAU [P. /echatelieri] prove- 
nant du Dahomey, par Ph. Dautzenberg (Journ. de Conch., 1893, 
pl. I). 
Desc. D’UNE NOUVELLE espéce du genre Littorina provenant des 
cétes de ]a Tunisie, par Ph. Dautzenberg (J. C.,’95, pl. I. L. ner- 
villet. 
Desc. D’UNE ESPECE NovUy. du genre Chama prov. des cétes 
océaniques de France, par Pb. Dautzenberg (Bull. Soc. Se. Nat. de 
louest de la France, 1892, p. 133, figs. ). Chama nicolloni. 
ConTRIB. A LA FAUNE MALACOLOGIQUE DES ILES SECHELLES, 
par Ph. Dautzenberg (Bull. Soc. Zool. France, 1893, p. 78). Con- 
tains important additions to the records in Martens’ work in Mobius’ 
Reise nach Mauritius, etc. No new species. 
CRUISE OF THE STEAM Yacut “ WILD Duck” IN THE BAHAMAS, 
etc., NOTES ON THE SHELLS COLLECTED, by Wm. H. Dall. (Bull. 
Mus. Comp. Zool. xxv, No. 9.) It appears that the lagoons of the 
Bahama Is. are peopled by a peculiar mollusk fauna, evidently 
derived from species living normally in the sea outside. The 
number of lagoon species is small, and they are all marked by (1) 
thinness of shell; (2) diminutive size; and (3) when colored at all, 
by brillianey of color, as compared with their nearest relatives in 
the adjacent sea. Among others enumerated by Dall which are 
common to the sea and the lagoons, are the following which occur 
only in and are characteristic of the latter: Cyrena colorata Prime, 
Venus (Anomalocardia) leplalea Dall, Tornatina parviplica Dall, 
Cerithium (Pyrazus) T-striatum var degeneratum Dall, Cerithium 
tenwis Pfr. 
A considerable list of land species is given, among them Chondro- 
poma watlingense and Cerion Agassizi are new, the latter fossil. 
Dall calls attention to the fact that the name Strophia is preoccupied, 
and proposes to substitute Cerion Bolten, 1799, as Mérch had 
already done in 1850. He gives names to the subdivisions of the 
genus indicated by Maynard, as follows: 
CrRION s.s. Parietal lamina short, situated in the angle between 
pillar and body-whorl; short internal sets of laminz persistent; 
type, uva. 
Srropuiops Dall. Parietal lamina penetrating body-whorl to 4, 
3 or more its length, central, ete. Type decwnana [not Fér.!= 
regia Bens. !—Ed.] 
MaynarpiA Dall. Like Strophiops, but parietal tooth short; 
type neglecta Mayn. 
Dracerion Dall. Parietal lamina double within, and penetrat- 
ing one or two whorls; type dalli Mayn. 
Eosrroputa Dall, 1890. No teeth or laminze. Type E. anodonta 
Dall, fossil in lower Miocene, Tampa Silex beds. 
