Ray's "Insects" comprised the Arachnids, Crustacea, Myriapoda and Annelida, in addition to the Hexapods.
These three authors definitely separated the Arachnida, Crustacea and Myriapoda as classes distinct from the Insecta (see Hexapoda).
Lamarck included the Thysanura and the Myriapoda in his class Arachnida.
The Myriapoda and some of the arthrostracous Crustacea.
In other words, the Malpighian tubes of the terrestrial Arachnida are homoplastic with those of Hexapoda and Myriapoda, and not homogenetic with them.
Newport, George, " Nervous and Circulatory Systems in Myriapoda and Macrourous Arachnids," Phil.
Orders: Antennato-Trachealia (= Thysanura and Myriapoda), Exantennato-Trachealia, ExantennatoBranchialia.
Orders: Myriapoda, Thysanura, Parasita, Suctoria, Coleoptera, Orthoptera, Hemiptera, Neuroptera, Hymenoptera, Lepidoptera, Rhipiptera, Diptera.
Orders: Myriapoda, Arachnida (Accra, Latr.), and Hexapoda.
Classes: Crustacea, Arachnida,Myriapoda,Insecta,Chaetognatha, Annelida.
Albinism is restricted to no particular class of the animal kingdom; for partial albinism at least is known to occur in Coelentera, worms, Crustacea, Myriapoda, Coleoptera,Arachnida and fishes.
They are distributed thus: Vertebrata, 8 species; Insecta, 17; Arachnida, 12; Myriapoda, 2; Crustacea, 5; Vermes, 3; Mollusca, 1.