. The Annals and magazine of natural history; zoology, botany, and geology. Classification of the Thalassinidea. 551 Key to the Subgenera of Callianassa. I. Eyes flattened against one another, with the cornea usually on the outside. 1. Propodite of the third leg without a lobe on the hinder edge Calliactites. 2. Propodite of the third leg with a lobe on the hinder edge. a. Telson long. a. Third maxillipeds narrow Cheramus. b. Third maxillipeds very broad Trypcea. b. Telson short and broad CaUichirus. II. Eyes rounded, bearing the cornea at the end .... Scallasis. The genealogical relations bet
. The Annals and magazine of natural history; zoology, botany, and geology. Classification of the Thalassinidea. 551 Key to the Subgenera of Callianassa. I. Eyes flattened against one another, with the cornea usually on the outside. 1. Propodite of the third leg without a lobe on the hinder edge Calliactites. 2. Propodite of the third leg with a lobe on the hinder edge. a. Telson long. a. Third maxillipeds narrow Cheramus. b. Third maxillipeds very broad Trypcea. b. Telson short and broad CaUichirus. II. Eyes rounded, bearing the cornea at the end .... Scallasis. The genealogical relations between the genera of Thalassi- nidea are probably those shown in the following tree :— Callianassa. Glypturus. Upogebia. Laomedia. Jaxea. Thalassina. Axiopsis. Axius. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original London, Taylor and Francis, Ltd
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