I. CRUSTACEA: DECAPODA 



381 



cases of symbiosis (p. 158) Eupagurus* Clibanarius* Allied is 5z>^««, palm 

 crab of the islands of Ihe Indian Ocean; its respiratory orj^ans referred to on 

 p. 378. Sub Order II. BRACHYURA. Body depressed; abdomen rudi- 



FiG. 403. 



Fig. 404. 



Fig. 403. — Phyllosoma larva (Mysis-stage) of Palinurus (after Gerstacker). 

 A, abdomen; C, head; T, thorax; a and i, e-xopodites and endopodites of thoracic 

 feet. 



Fig. 404. — Megalops larva of Porhmus (from Lang, after Claus). 2, antenncc; IV- 

 VIII, thoracic appendages; a''~'\ abdominal somites ia" is Ihe seventh). 



Fig. 405. — Pandulus moiilagui* 



Fig. 406. — Eupaguriis bernhardiis, hermit 

 crab (from Emerton). 



mentary and folded in a groove under the cephalothorax; antenns short; never 

 more tiian one pair of feet chelate; ventral nerve cord concentrated (fig, 402). 

 Some inconspicuous groups like the Porcellanid^, the Hippid.e, and the 



