47 



SPECIES 



HABITAT 



DEPTII 



IN FATHOM* 



VII. Genus Gonatonotus A. M.-Edw. 1SS1. 

 crassus A. M.-Edw. i SS t . Grenada, Antilies 262 



REMARKS 



Hoplophorus H. M.-Edw. 1881. 



Oplophorus H. Milne-Edwards, Hist. Nat. Crust. II, 1837, p. 423. 

 Oplophorus C. Spence Bate, Challenger Crustacea Macrura, 1888, p. 760. 

 Hoplophorus A. Alcock, Catal. Indian Deep-Sea Macrura, 1901, p. 72. 



The genus Hoplophorus H. M.-Edw., characterized by the strongly serrated outer edge 

 of the antennal scale and by the foliaceous exopodites, with which the maxillipeds and the 

 anterior or all the thoracic legs are provided, is represented by 5 or 6 species, that occur in 

 the tropical and subtropical seas of both hemispheres. Hopl. typus H. M.-Edw., the first described 

 species, hitherto only known from the Admiralty and Philippine Islands, was taken by the 

 "Siboga" in various parts of the Indian Archipelago, East of the Island of Saleyer, in the Flores 

 Sea, the Bali Sea and off the south coast of Timor. Hopl. gracilirostris A. M.-Edw., a beautiful 

 species of a bright carmine pink colour, first discovered by the U. S. Coast Survey Steamer 

 "Blake" off the island of St. Domingo and afterwards captured by the same expedition at a 

 few other West Indian localities, occurs also in the Indian Ocean, the Arabian Sea, the Bay of 

 Bengal and the Andaman Sea, and has even been observed near the Hawaiian Islands. Ho/>l. 

 longirostris Bate, probably only a variety of Hopl. gracilirostris, was found by the "Challenger" 

 off Kandavu, Fiji Islands. Hopl. foliaceus M. J. Rathbun, the third or fourth indopacific represen- 

 tative of this genus, is recorded both from the Hawaiian Islands in the Pacific and from the 

 Farquhar Islands in the Indian Ocean. Still two other species are found in the Atlantic, viz. 

 Hopl. Grimaldii Cout., a form closely related to Hopl. gracilirostris, observed west of Madeira 

 and north of Tristan da Cunha, and finally Hopl. spinicauda A. M.-Edw., discovered by the 

 "Travailleur", a species apparently closely allied to Hopl. foliaceus, but which is only known 

 by a figure in the "Recueil de Figures de Crustacés nouveaux ou peu connus", published by 

 A. Milne-Edwards in 1883. 



The species of this genus are generally found in deep water, the maximum depth being 

 1439 fathoms, from which Hopl. gracilirostris was recorded in the Bay of Bengal; this form, 

 however, occurs here also in 145 fathoms and is recorded from off the island of St. Domingo 

 as living in 118 fathoms. I wish, however, to call attention to the remarkable observation, 



