THE BURROWING BARNACLES (CIRRIPEDIA: ACROTHORACICA ) 49 



Figure 6. — Lithoglyptes bicornis Aurivil- 

 lius, 1892. Female, side view, size 2.5 

 X 1.5 mm (after Aurivillius, 1894). 



Lithoglyptes spinatus Tomlinson and Newman, 1960, page 519 



Figure 7 



Diagnosis: Lithoglyptes with aperture half of the greatest width of 

 mantle, sUghtly arched, equipped with one pair of strong hooks and 

 one pair of bristle-bearing spines; anterior and posterior rami of 

 mouth cirri with five and four articles, respectively. Caudal appendage 

 with two distinct segments; lateral bar weak or absent. Larvae re- 

 tained until cyprid stage; pink with reddish mantle around aperture. 



Distribution: Since its description, L. spinatus has been found 

 to be widely distributed. Identifiable specimens have been found as 

 follows ; many incomplete and questionable specimens are not included : 



Entedebir Island (Landing Bay) in faviid coral, coll. Stephen Wainwright on 



Israel South Red Sea Expedition, March- April 1962. 

 Unident. coral from intertidal rockpools, Minnie Waters, near Grafton, northern 



N.S.W., Australia, from Australian Museum. 



