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By the Trilobita, again, the Archicarida are connected with such Edriophthalmia as Serolis. The Stomapoda are extremely modified Edriophthalmia of the amphipod type. On the other side, the Isopoda lead to the Myriapoda, and the latter to the Insecta. The phylum of the Vertebrata is the most interesting of all, and is admirably discussed by Professor Haeckel.
From some of these "Zoeopoda" arose all the remaining Malacostracous Crustacea; while, from others, was developed some form analogous to the existing Galeodes, out of which proceeded, by gradual differentiation, all the Myriapoda, Arachnida, and Insecta. I should, be disposed to interpret the facts of the embryological history and of the anatomy of the Arthropoda in a different manner.
Thus, for instance, an insect, standing at the head of the articulated animals, is, in the larva state, a true annelid, or worm, the annelida being the lowest in the same class. The embryo of a crab resembles the perfect animal of the inferior order myriapoda, and passes through all the forms of transition which characterize the intermediate tribes of crustacea.
Musters, Captain, on Rhea Darwinii; marriages amongst Patagonians. Mutilations, healing of; inheritance of. Mutilla europaea, stridulation of. Mutillidae, absence of ocelli in female. Mycetes caraya, polygamous; vocal organs of; beard of; sexual differences of colour in; voice of. Mycetes seniculus, sexual differences of colour in. Myriapoda.
Thus, for instance, an insect, standing at the head of the articulated animals, is, in the larva state, a true annelid, or worm, the annelida being the lowest in the same class. The embryo of a crab resembles the perfect animal of the inferior order myriapoda, and passes through all the forms of transition which characterize the intermediate tribes of crustacea.
Wales, North, numerical proportion of male and female births in. Walkenaer and Gervais, spider attracted by music; on the Myriapoda. Walker, Alex., on the large size of the hands of labourers' children. Walker, F., on sexual differences in the diptera. Wallace, Dr.
The order of Myriapoda is placed by systematists at the bottom of the class of insects; the sucking Myriapods are amongst the lowest forms of the order, and it is singular to find one of these lowly organised species furnished with an apparatus of such utility, and the numberless higher forms without any trace of it.
These characters absent in the lowest classes Brilliant colours Mollusca Annelids Crustacea, secondary sexual characters strongly developed; dimorphism; colour; characters not acquired before maturity Spiders, sexual colours of; stridulation by the males Myriapoda.
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