i88 



SPECIES 



HABITAT 



DEPTH IN FATHOMS 



Phyllognathia Borr. 191 5. 



ceratophthabna (Balss) 19 13 I Satsiima, Japan 



I S. Nilandu Atoll, in the Maldives 



Hymenocera Latr. 1829. 



dfgans Heller 1861 Tor, Red Sea 



Djibouti 



Matenimo Island, Mozambique 



Seychelles 



Mauritius 



West coast of Binongka 



Amboina 



Ternate 



Seychelles 



Raraka, I'aumotu Islands. 



Latreillii Guer.. 

 picta Dana 1852 



Between Corals 

 Reef, at 2 fathoms 



Reef 



Coral reefs 



Gnathophyllum Latr. 



The genus Gnathophyllum Latr. contains five or si.x 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 bi'evirostris Gourret ') occurs in the Bay of 

 Marseilles. A species fr(jm the coast of North Carolina has recently been described b\- W. P. Hay 

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

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

 canum Guer., with which an indopacihc species, Gnath. fasciolatuin Stimps., is considered by 

 Miss Rathbun and Noiiii.i to be identical. This Gnath. fasciolatiim 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. pallidii))! and by Rici iters from Mauritius 

 under the name of Gnath. zcdra. Gnath. fridens Nobili, which in the pattern of its colouration 

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

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

 was taken on the' reef at Panama. 



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

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

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

 Gnath. tridens and panametise, finally, on the reef at low tide. 



i) In P. Gourret's work "Revision de.s Ciustaces I'odophthalmes du Golfe de Marseille, Marseille 1888" this variety is described 

 at p. 120 under the name of breviroslris.^ but at p. 33 under the name of rcclirostris \ Gourket's "Note a I'Institut 18S7" was not 

 at my disposal. 



