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UNITED STATES NATIONAL MUSEUM BULLETIN 296 



Figure 3. — Weltneria reticulata, new species, from Heron Island, Australia, except as 

 noted: a, female side view; b, opercular area, side view; c, detail of operculum, carinal 

 end distal to attachment, side view flattened; d, detail of operculum, surface view; e, 

 mandible;/, first maxilla; g, first cirrus (mouth cirrus); h, detail of base of terminal cirri, 

 posterior thorax, and caudal appendage, one of paired appendages shown; i, detail of 

 terminal cirrus, showing setation; ;', mature male; k, mature cyprid larva taken from 

 female; /, burrow aperture in Turbo setosus; m, burrow aperture from Turbo chrysostoma 

 from Koror, Palau Islands; n, variation in burrow apertures in Tridacna maxima shells. 



