178 MEMOIRS OF THE QUEENSLAND MUSEUM. 



Back elevated anteriorly, somewhat hollowed in tlie middle. Body naked, 

 the upper portion of the sides covered with numerous warts and minute papillae. 

 Lateral line marked by a groove with eleven papilhx- along its length, the last 

 being on the base of the tail. A row of papillffi across the base of the pectoral. 

 Each ventral with a rounded knob at the base of its spine. 



Colour-marking arranged as shown in the figure. 



The above characters are taken from the holotype of Erosa iridea Ogilby, 

 80 mm. long, which is figured on Plate XI. A second example, 102 mm. long, 

 only differs in having its colour-markings rather better defined. 



Synonymy. — As already noted {loc. cit.), I have compared the holotype 

 of E. iiidea with a small Japanese example of E. erosa and find no characters to 

 distinguish them as separate species. 



Localities. — Nineteen miles N. 30 degrees W. from Double Island Point, 

 Queensland ; 33 fathoms. Holotype of E. iridea. 



Capricorn Group, off Port Curtis, Queensland; 25-30 fathoms. Queens- 

 land Museum. 



