1896. | NEW YORK ACADEMY OF SCIENCES. 145 
tached from each other, and scattered over layers of the shale, 
it is quite impossible to determine this point. For the smooth 
plates I wouid suggest the name Cirripodites. One of these 
plates and a Plumulites are figured below. 
1. Plumulites Manuelensis, Mag =. From the subzone of Paradoxides Davidis, 
Manuel Brook, Newfoundland. 
2. Cirripodites Acadicus, triangular form, Mag. 2. From the subzone of P. 
‘Eteminicus, St. John, N. Bs Canada. 
All the plates so far found belong to the Paradoxide Zone. 
In America this zone contains four subzones, viz. : 
1. Subzone of P. lamellatus (cf. Gilandicus). 
2. ” ‘“ P. Eteminicus (cf. rugulosus). 
3. 5 ‘“‘ Pp. Abenacus (cf. Tessini). 
4, _ “ P. Davidis (the highest subzone). 
In Sweden there are two higher subzones in the Paradoxides 
beds. 
Plates of Cirripedes have been found in the second and fourth 
subzones ; and certain fossils which probably are of this type of 
crustacean, from the third subzone. The fossils from the several 
subzones differ so faras to show that they are probably of differ- 
ent genera. 
A fuller account of these interesting fossils will be given in an 
article which the author has in preparation, on the Fauna of the 
Paradoxides Zone in America. 
In reference to the use of the generic names given above, a 
few words may be said. Apparently there has been a diversity 
of practice in the use of terms to designate these fossils. 
Dr. Henry Woodward* argues for the use of Turrilepas as 
against Plumulites, on the ground of priority of publication. 
Barrande first found Plumulites in the Ordovician rocks (Etage 
D.) of Bohemia, whereas Dr. Woodward’s Turrilepas came from 
the Silurian, and it seems altogether probable that they are dif- 
ferent genera. 
Dr. H. M. Ami has found plates in the Utica beds near Ot- 
tawa, which very closely resemble some of Barrande’s figures ; 
* Geolog. Mag. London, New Ser. Dec. iii., vol. vi., p. 272. 
TRANSACTIONS N. Y. ACAD. Scr., Vol. XIV., Sig. 10, June 2, 1896. 
