THE BURROWING BARNACLES (CIRRIPEDIA: ACROTHORACICA ) 37 



Figure 2.—Weltneria hirstda (Tomlinson, 1963b) from Coconut Island, Oahu, Hawaii: 

 a, female with male, side view; b, detail of operculum twisted flat on left end; c, detail 

 sketch of portion of comb collar showing fringed outer edge; def: mouthparts dissected 

 out and viewed from outside surface; d, mandible; e, first maxilla; /, second maxillae 

 g, detail of basal portions of terminal cirri, the posterior end of the thorax, and the caudal 

 appendage, numbers designate terminal cirri, only one of paired cirri shown; h, burrow 

 aperture as viewed from above coral surface. 



