Bivalvia
双壳纲
双壳纲
Bivalvia n 1 :
oysters ;
clams ;
scallops ;
mussels [
synonym : {
Bivalvia }, {
class Bivalvia }, {
Lamellibranchia }, {
class Lamellibranchia },
{
class Pelecypoda }]
Lamellibranchia \
La *
mel `
li *
bran "
chi *
a \,
Lamellibranchiata \
La *
mel `
li *
bran `
chi *
a "
ta \,
n .
pl . [
NL .
See {
lamella },
and {
Branchia }, {
Branchiate }.] (
Zool .)
An earlier name for the class of Mollusca including all those that have bivalve shells ,
as the clams ,
oysters ,
mussels ,
etc .,
now called {
Pelecypoda }
or {
Bivalvia }.
[
1913 Webster PJC ]
Note :
They usually have two (
rarely but one )
flat ,
lamelliform gills on each side of the body .
They have an imperfectly developed head ,
concealed within the shell ,
whence they are called {{
Acephala }}.
Called also {
Conchifera },
and {
Pelecypoda }.
See {
Bivalve }.
[
1913 Webster ]
安装中文字典英文字典查询工具! 中文字典英文字典工具:
复制到剪贴板
英文字典中文字典相关资料:
Google Translate Google Translate