54 Bulletin Vanderbilt Marine Museum, Vol. VI 



MACRURA 



Family: SCYLLARIDAE 



Genus: PARRIBACUS Dana 



Parribacus ursus-major (Herbst) 



Plate 13 



Type: Herbst's type came from the East Indies and is de- 

 posited in the Berlin Zoological Museum. 



Lund did not cite a type locality in his original description of 

 Scyllaru^ antarticu^, but referred to Seba's figure, "Seba Muf., 

 tab. 20, fig. 1." The majority of Lund's types are deposited in the 

 Copenhagen Museum. 



Distribution : This species, which was known to the earliest 

 writers on natural history, is found in widely separated areas of 

 the Indo-Pacific, from Mauritius eastward to the Paumotu Archi- 

 pelago and from Japan to the Hawaiian Islands. It is not yet 

 reported from the Red Sea. It has been reported from the tropic 

 west Atlantic, on the shores of Brazil and in the Caribbean. 



It is recorded from the following stations : Mauritius, Reunion 

 Island, Indian Archipelago, Amboina, Ternate, Australia (No- 

 bili) ; New Guinea (Miers) ; "Siboga" Station 131, anchorage off 

 Beo, Karakelang Islands, 13 meters (de Man) ; Sagami Bay, 

 Japan (de Man) ; Natikitiwan, Lifu, Loyalty Islands (Borra- 

 daile) ; Funafuti, Ellice Islands (Whitelegge) ; Upolu, Samoa 

 (Dana) ; Palmyra Island (Edmondson) ; Hawaiian Islands (Ran- 

 dall, Stimpson, Rathbun) ; Carysfort Island, Tahiti, Society 

 Islands (Nobili) ; Papeete, Tahiti (Boone) ; Rikitea, Hao Island, 

 Paumotu Islands (Nobili) ; Coasts of Brazil (Marcgraf). 



Material examined : One large specimen from Venus Point 

 Reef, Tahiti, Society Islands, August 15, 1931. Another specimen 

 from Papeete, Tahiti, August 16, 1931. 



Technical description: Carapace squarish appearing but 

 in reality not quite three-fifths as long as wide, with the frontal 

 margin truncate; the lateral margins are subparallel, cut into 

 eight strong, acute, procurved teeth, of these teeth the first and 

 second are semicoalescent, while the incision between the sec- 

 ond and third teeth is two and one-half times as deep as, and wider 

 than, any of the others, extending inward to a point opposite the 

 orbital outer margin ; there is a bunch of coarse setae on the an- 



