120 
MOLLUSCA, 
PoLLiciPES, Leach, 
Where, besides the five principal valves, there are several small 
ones near the pedicle * * * § , some of which, in certain species, are nearly 
as large as the former f ; frequently there is an azygous valve, oppo- 
site to the ordinaiy one of the same description. In the 
CxNERAs, Leach, 
The cartilaginous mantle contains but five small valves, which do 
not occupy the whole of its extent X- In the 
Otion, Leach, 
The cartilaginous mantle contains but two very small valves, with 
three little grains which hardly merit that name, and has two tubular 
auriform appendages §. 
Tetralasmis, Cuv. 
But four valves, which surround the aperture; two of them longer 
than the others. The animal is partly confined within the pedicle, 
which is large, and covered with hair. They arc a kind of tubeless 
Balani ||. 
11a LAN us. Brag. 
The principal part of the shell of the Balani consists of a testaceous 
tube attached to various bodies, the aperture of which is more or less 
closed by two or four valves. This tube is formed of various pieces, 
wliich appear to be detached, and separated in proportion as the 
growth of the animal requires it. The branchiae, mouth, articulated 
tentacula, and the anal tube, differ but little from those of the Ana- 
tifae. In 
Balanus 
Properly so called, the tubular portion is a truncated cone formed 
* Lepas polHcipes, L., or Poll, cornucopia, Leach; Encyc. Method., pi. 226, f. 10, 
1 1 ; — Poll, villosus, Leach, Edinb. Encyc. 
-h Lepas mitella, Chemn., VIII, 849, 850, Encyc. Method., pi. 266, f, 9, or 
Polylepe couronne., Blainv., Malac. ; — Poll, scalpellum, Chemn., VIII, p. 294, or 
Polylepe vulgaire, Blainv., Malac., Ixxxiv, f. 4. It is the genus Scalpellum, 
Leach, loc. cit. 
J Cineras vittata, Leach, Edinb. Encyc., or Lepas coriacea, Poli, vi, 20, or Gym- 
nolepas Cranchii, Blainv., Malac., Ixxxiv, 2. 
§ Otion Cucieri, Leach, or Lepas leporina, Poli, 1, vi, 21, or Lepas aurita, 
Chemn., VIII, pi. c. f. 857, 858, M. de Blainville unites Cineras and Otion in his 
genus Gymnolepa. 
II Tetral. hirsutus, Cuv., Moll. Anatif., f. 14. 
N. B. The Lithotrias of Sowerby, converted by Blainville into Litholepa, 
may be, as is conjectured by Rang, merely an Anatifa accidentally fixed in a hole 
excavated by some bivalve. 
The Alepas, Rang, should be Anatifae, whose cartilaginous mantle is without any 
shell whatever ; I have never seen them. At all events, they must not be con- 
founded with the Triton of Linn 2 eus, which was the animal of an Anatifa separated 
from its mantle and shell. 
