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Extra resources for Biology and Geology of Coral Reefs. Biology 2
Stegopontonia commensalis Nobili, male; Anse Étoile, Mahé, Seychelle Islands. b. Reduction of rostral lamina. In unmodified species the rostrum generally distinctly exceeds the antennular peduncle and, in some freeliving species, such as Periclimenes tenuipes Borradaile, it is greatly elongated. Many commensal species show a decrease in the size of the rostrum. All stages are shown in Periclimenaeus, ranging from a normally well-developed rostrum to a short process that fails to exceed the eyes.
Echinodermata G. Ascidiacea H. Pisces XIV. The Extent of Commensalism in the Tropical Marine Decapoda Natantia XV. Summary References 73 73 74 76 76 76 76 77 77 77 79 79 80 80 81 81 81 90 92 I. Introduction The Decapoda Natantia occur in great variety in the warm waters of shallow tropical seas and the greatest diversity of species is probably to be found on the well-developed coral reefs of the Indo-West Pacific region. Their abundance is generally not obvious to the skin diver or scuba diver swimming among the corals.
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