THE BURROWING BARNACLES (CIRRIPEDIA: ACROTHORACICA ) 39 



A segment count for the terminal cirri of a Japanese specimen 

 follows : 



♦Anterior. **Posterior. 



The setation on the cirri is typical: the inner curvature bears 

 a pair of medial setae one and one-half times the segment length, 

 and a pair of distal setae about four times the segment length. In 

 addition, the distal pair occasionally may possess a short single seta 

 about one-half the segment length. The outer curvature bears a single 

 seta about three times the segment length on every two to six segments. 



The burrow of the female appears in the surface view as a pointed 

 oval (fig. 2h). 



The MALE : Several males were seen, cemented to the female in the 

 attachment disk area. The one shown in figure 2a measures 0.35 X 0.2 

 mm in body size, and bears the usual pair of antennules. The blunt, 

 corrugated posterior projection also is found in all other species of the 

 genus Weltneria (except one, page 44, in which males were not de- 

 scribed). No peg plates, teeth, or other integumentary ornamentation 

 was noted. 



Relationships: This species most closely resembles a species of 

 Weltneria from New South Wales, Australia (page 44). The latter has 

 a granular, weak lateral bar, and a row of long hyaUne spines along 

 the operculum; the holotype of the latter is 2.7 X 1.5 mm, as compared 

 to a maximum of 2.1 X 1.6 mm for W. hirsuta. 



Weltneria reticulata, new species 



Figure 3 



Diagnosis: Weltneria with operculum terminating apicaUy in a 

 tapered point, set with numerous bifid or multipointed marginal teeth, 

 and ornamented with a reticulated pattern of ridges medially and rows 

 of fine dots laterally. 



Etymology: reticul- (L.), a net, because of the pattern on the 

 operculum. 



Distribution: Approximately fifty specimens from TridxLCTia 

 maxima Roding, 1798 {T. maxima var. fossor Hedley, 1921) from 

 Heron Island, Queensland, Australia. Two good specimens from Turbo 



