Source: Wikimedia Commons This image was donated by Pearson Scott Foresman, an educational publisher, to Wikimedia Commons, and is thereby in the Public Domain. 動物 甲殻類 ザリガニ ザリガニ
Lessons in Zoology by Clarabel Gilman, Common Animal Forms, New England Pub. Co prior to 1911 動物 甲殻類 カニ ヤドカリ
This image was donated by Pearson Scott Foresman, an educational publisher, to Wikimedia Commons, and is thereby in the Public Domain. --- See http://commons.wikimedia.org/wiki/Category:Pearson_Scott_Foresman_publisher 動物 甲殻類 生物学 ロブスター
Source: Wikimedia Commons This image was donated by Pearson Scott Foresman, an educational publisher, to Wikimedia Commons, and is thereby in the Public Domain. 動物 甲殻類 カニ カニ
This image was donated by Pearson Scott Foresman, an educational publisher, to Wikimedia Commons, and is thereby in the Public Domain. --- See http://commons.wikimedia.org/wiki/Category:Pearson_Scott_Foresman_publisher 動物 甲殻類 カニ Hermitcrab
Lessons in Zoology by Clarabel Gilman, Common Animal Forms, New England Pub. Co prior to 1911 動物 甲殻類 ロブスター ロブスター
This image was donated by Pearson Scott Foresman, an educational publisher, to Wikimedia Commons, and is thereby in the Public Domain. --- See http://commons.wikimedia.org/wiki/Category:Pearson_Scott_Foresman_publisher 動物 甲殻類 生物学 エビ