number recorded from the panel submerged for 6 months Tseing 500 of 

 embryonic size. The maximum attack was rated as moderate, "biat largely 

 on the hasls- of numbers rather than size or damage to panels. The 

 changing of the test board locations and the brief period for vhich 

 either was operated make it difficult to accurately evaluate the deunage from 

 Teredlnidae in this harbor. 



2. Limnoria . Ho evidence of Llmnoria occurred in any of the 

 control panels from either location. No forms occxirred in either of 

 the 2 test panels from the first location, and only mere traces occurred 

 in k of the 6 test panels from the second location. 



5. Pholadidae . No Pholadidae were recorded from either location. 

 A57.0ll- Fouling Agents 



1. Silt . All of both the control and test panels showed traces 

 of silt except one of each which showed light deposits. 



2. Invertebrate animal phyla . 



a. Coelenterata (hydroids ). All except the last 2 of the 

 control panels from the second location and all the test panels from 

 both locations showed hydroids. These hydroids were limited to traces 

 in most cases, but some showed light growths Tubularia was the 



only form identified. 



b. Bryozoa (filamentous ). A trace of a filamentous Bryozoa 

 was recorded on a single one of the test panels. 



c. Annelida (annelid worms ). A trace of serpulid ( Serpula ) 

 tubes was recorded on a single one of the test panels. 



d. Arthropoda (crustaceans ). Balanus (beLmacles) occurred 

 more or less frequently on all of both the control and test panels from 

 both locations, but all specimens remained very small. The maximum size 

 recorded on any of the control panels was only 2 mm in diameter, while 

 the maximum size on any of the test panels was 5 ™i in diameter in 2 

 panels submerged for k and 5 months, respectively. 



A57 . 05 Summary and Conclusions 



1. Installation . A test board of the panel type was operated 

 for brief periods at two locations In Waitemata Harbor at Auckland, New- 

 Zealand, between September l6, 19kk and December 15, 19^5^ to determine 

 the identity and prevalence of marine borers and fouling agents occurring 

 at this location. 



260 



