i SS 



SPECIES 



HABITAT 



DEPTH IN FATHOMS 



Phyllognathia Borr. 191 5. 



ceratophthalma (Balss) 1913 \ Satsuma, Japan 



S. Nilandu Atoll, in the Maldives 



elegans Heller 1861 



Latreillii Guér. . 

 picta Dana 1852 



Hymenocera Latr. 1829. 



Tor, Red Sea 



Djibouti 



Matemmo Island, Mozambique 



Seychelles 



Mauritius 



West coast of Binongka 



Amboina 



Ternate 



Seychelles 



Raraka, Paumotu Islands. 



Betvveen Corals 

 Reef, at 2 fathoms 



Reef 



Coral reefs 



Gnathophyllum Latr. 



The genus Gnathophyllum Latr. contains five or six species and one variety, all of 

 small size and of a charming and elegant colouration. Gnathophyllum elegans (Risso) is found 

 in the Mediterranean and the Adriatic, a variety brevirostris Gourret v ) occurs in the Bay of 

 Marseilles. A species from the coast of North Carolina has recently been described by W. P. Hay 

 (vide p. 187, Xote). Still a second form occurs on the East coast of America, namely in the 

 Gulf of Mexico, at the Bermudas and on the shores of Cuba and Porto Rico, Gnath. ameri- 

 camim Guér., with which an indopacific species, Gnath. fasciolatum Stimps., is considered by 

 Miss Rathbun and Nobii.i to be identical. This Gnath. fasciolatum Stimps. is known from Port 

 Jackson, from the Hawaiian Islands and from the Indian Archipelago, having been observed 

 at Ternate, Amboina, near the North point of Saleyer-island and on the Muaras-reef, east coast 

 of Borneo ; it is known from the Seychelles, Minikoi and Djibouti and is moreover recorded 

 by Ortmann from Tahiti under the name of Gnath. pallidum and by Richters from Mauritius 

 under the name of Gnath. zebra. Gnath. triolens Nobili, which in the pattern of its colouration 

 much resembles Gnath. fasciolatum, is still only known from the reefs of Rikitea, on the isle 

 of Mangareva, one of the Paumotu Islands. The last species, finally, Gnath. panamense Faxon, 

 was taken on the reef at Panama. 



Gnath. elegans (Risso) occurs at a depth of 10 — 20 fathoms, while Gnath. americanum 

 Guér. is found in the Gulf of Mexico at 26 to 27 fathoms; Gnath. fasciolatum Stimps. was 

 taken in water of 6 fathoms in Port Jackson and off the Hawaiian Islands at the surface, 

 Gnath. tridcns and panamense, finally, on the reef at low tide. 



1) In P. Gourret's wovk "Révision des Crustacés Podophtfialmes du Golfe de Marseille, Marseille iSSS" this variety is described 

 at p. 120 under the name of brevirostris, but at p. 33 under the name of rectirostris ! Gourret's "Note a 1'Institut 18S7" was not 

 at my disposal. 



