36 UNITED STATES NATIONAL MUSEUM BULLETIN 29 6 



The cyprid: The cyprids collected within a gravid female were 

 mature enough to warrant a description. The shape and size (0.87 

 mm long X 0.365 mm wide X 0.15 mm thick) are typical for the 

 Subclass Cirripedia. The strongly developed antennules were re- 

 tracted, but were typical, with the "goat's foot" terminal processes. 

 The most noteworthy feature is the very long, two-segmented caudal 

 furca tipped distally with bristles, which represent the caudal ap- 

 pendages. The six pairs of bristled appendages are presumably 

 natatory, and represent the cirri of the adult. No gap or hiatus is 

 seen between the presumptive mouth cirrus and the five pairs of 

 presumptive terminal cirri. A prominent mouth field is visible, with 

 the rudiments of the mouth appendages clearly seen. The carapace is 

 hyaline and smooth, without hairs, teeth, or peg plates found in some 

 other members of the order. Paired cyprid compound eyes and a 

 single dorsal naupliar eye are present. 



Weltneria hirsuta (Tomlinson) 



Figure 2 



Lithoglyptes hirsutus Tomlinson, 1963b, page 299. 

 Utinomia newmani Tomlinson, 1963c, page 265. 



Diagnosis: Weltneria with operculum armed with numerous short, 

 simple, and compound teeth and long hairs; operculum terminates in 

 a tapered spine. 



Distribution: In Psammocora verriUi from a depth of 3 to 6 feet 

 on Sand Bar Reef and in Porites compressa, from NE. side Checker 

 Reef, Kaneohe Bay, Oahu, Hawaii, and in Bursa bufo (Roding) from 

 the area of Seto, Wakayama-ken, Japan. 



The original Hawaiian material was given to me by Charles Stasek 

 and Stephen Wainwright. Additional material was collected by me 

 on Coconut Island, courtesy of the University of Hawaii Marine 

 Laboratory. 



Type-material: Holotype USNM 107544. Paratype material: 

 SFSC; CA; Plymouth Laboratory, England; Seto; Portobello Marine 

 Station, New Zealand. Additional material: Aust, BPB, Brit. Belg, 

 BA, Dublin, Mex, Paris, UCT, Vict. 



All descriptions are based on females from Hawaii unless otherwise 

 stated. The mantles of sixteen adults averaged 1.95 mm in height 

 X 1 . 1 8 mm in width (maximum 2. 1 mm and 1 .6 mm) , and are flattened 

 laterally. The mantle is studded with numerous small T-shaped teeth, 

 short spinules, and three- or four-pointed star-shaped teeth, all scat- 

 tered about on the surface, but particularly near the aperture. The 



