| Title |
X. Arachnida to which are added arthropod groups other than Insecta and Crustacea. [Gigantostraca, (Xiphosura, Synxiphosura, Eurypterida, Trilobita), Pantopoda, Tardigrada, Pentastomida, Myriopoda, and Prototrachaeata. In: Zoological Record for 1931 |