United States or Ethiopia ? Vote for the TOP Country of the Week !
Considering this uniformity presented by the heart in the entire order of the Amphipoda, it cannot but seem very remarkable, that in the very next order of the Isopoda, we find it to be one of the most changeable organs. Heart of a young Cassidina. Heart of a young Anilocra. Abdomen of the male of Entoniscus Cancrorum. h. Heart. l. In all other Isopoda the heart is removed towards the abdomen.
But Spence Bate, a careful observer, states that he has seen females of the form of Praniza laden with eggs far advanced in their development. Entoniscus Cancrorum, female, magnified 3 times. Cryptoniscus planarioides, female, magnified 3 times. In this order we meet for the first time with an extensive retrograde metamorphosis as a consequence of a parasitic mode of life.
Word Of The Day