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PSEUDOBONELLIA, A NEW ECHIUROID GENUS 

 FROM THE GREAT BARRIER REEF. 



By Professor T. Harvey Johnston, M.A., D.Sc, C.M.Z.S., and 

 O. W. Tiegs, B.Sc, Biology Dept., University, Brisbane. 



(Plates ix.-xi.) 



Very little appears to be known regarding Australian Echiu- 

 roids, although one genus, Thalassemia, is well represented on the 

 Queensland coast. We have collected specimens on many of the 

 mud-sand flats in Moreton Bay (Myora, Amity, Swan Bay, Goat 

 Island, Southport), where it is fairly common, being in places 

 very abundant. This is the species referred to by Tosh (1902, 

 p. 180, PI. 12, fig. 3). A related and perhaps identical species 

 occurs in similar situations at Burnett Heads. Other species 

 are represented in collections made by us from beneath stones 

 and dead coral in Moreton Bay (Peel and Goat Islands); Port 

 Curtis (Facing, Rat, and Curtis Islands); and on the Capricorn 

 Reefs (Masthead and North-west Islets). A species is occasion- 

 ally met with in Port Jackson, having been recorded by White- 

 legge (1889, p. 211) as Thalassema sp. 



Shipley (1899) reported the presence of a number of species in 

 New Guinea and adjacent islands lying to the north-east of Aus- 

 tralia, mentioning other Eastern Pacific forms as well. Sluiter 

 (1891, 1902) recorded a considerable number from the Dutch 

 East Indies, while Ikeda(1904, 1907) gave an account of several 

 of those occurring in southern Japanese waters. The genus is, 

 then, well represented on the tropical and subtropical coasts of 

 the Eastern Pacific. 



Echinrus and Hamingia are represented each by one species — 

 E. unicinctus Drasche, from the cold waters of northern Japan 

 (Selenka, 1885, p. 6; Shipley, 1899, p. 344), and H. siboyie Sluiter 

 (1902, p. 44) dredged by the Siboga Expedition from the very 

 deep water in the East Indies. 



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