THE BURROWING BARNACLES (CIRRIPEDIA: ACROTHORArttCA) 81 



Type-material: All specimens retained at SFSC. 



Dimensions: Size of best specimen approximately 4.25 X 2.0 mm, 

 with aperture of 1.5 mm. 



This species is much like the other two species of the genus, except 

 for the margins of the operculum mentioned in the diagnosis. In addi- 

 tion, small teeth and many short hairs are scattered about on the ex- 

 ternal surface of the operculum (figure 18a). 



Figure 18. — Berndtia fossata, new species, from Psammocora fossata from eastern New 

 Guinea: a, sketch of surface view of opercula, with detail of margin; b, mandible; c, first 

 maxilla. 



The body is almost exactly the same as in the other species of the 

 genus, as far as can be ascertained. There are five pairs of terminal 

 cirri without a caudal appendage, plus a prominent mouth cirrus with 

 six and five segments in the anterior and posterior ramus, respectively, 

 on a two-segmented protopod. 



The mouthparts are typical (figure 18b, c). The mandible has three 

 major teeth plus an inner angle with numerous fine teeth and hairs. 



