5. Iaverte"brate ap-iTnwi phyla > 



a. For if era (sponges ). Ten colonies of an encrusting 

 sponge were recorded on a single test panel at location No. 1, but 

 none wtiatever occiirred at the other locations. 



"b. Coelenterata (hydroids ). Hydroids, ranging from traces 

 to occasionally light growths, occurred on nearly all the panels, "both 

 control and test, at all four locations. 



c. Bryozoa (encrusting and filamentous ). Encrusting 

 Bryozoa occurred quite frequently at all four locations, "being recorded 

 on 20 of a combined total of 58 control panels and on 59 of a combined 

 total of 72. test panels. The number of colonies per panel ranged from 

 one to 50» Cryptosula Egllasiana, Cryptosula sp., E Lectra . , and 

 Holoporella sp. were identified. FilataentouB Bryozoa occurred on 6 

 control panels and on 5 test panels at location No. 1, and on one 

 panel of each type at location ITo. 2, but did not occur on any of the 

 panels at the other two locations. The number of colonies on any one 

 panel ranged from 1 to 2l|.. Bufnila sp. was the only identification. 



d.^ Annelida (annelid worms ). Serpulid ( Serpula ) worms 

 occurred quite frequently on panels, both test and control, at locations 

 1, 2, and 5/ "but only on 2 test panels at the other location. They 

 occurred on 15 of a combined total of 58 control panels and on k9 of 

 a combined total of 72 test panels, ranging from a trace to numerous. 

 At location Ko. 5; six test panels removed consecutively were covered. 



e. Mollusca (nonboring mollusks ). A trace of Ostrea 

 (oysters) was recorded on one of the test panels at location No. k. 

 The maximum diameter recorded was 55 djdi. A trace of Anamla (jingle- 

 shells) was recorded on a single test panel at location No. 2 and 

 on 2 test panels at location No. k» The maximum size attained was 

 kO mm in diameter. 



f . Chordata (tunicates ) . Botryllus schlosseri was recorded 

 on a single control panel and a single test panel at location No. 2, 

 there being one and 10 colonies, respectively, at these panels. 



A55.O5 Summary and Conclusions 



1. Installation . Test boards of the panel type were operated 

 at four locations at the U. S. Naval Advanced Base at Espiritu Santo 

 Island, New Hebrides, to determine the Identity and prevalence of 

 marine borers and fouling agents. The boards were installed on August 

 10, 19^; two boards were operated until September 10, 19^5 > an<i the 

 other two until January 10, 19^6. 



248 



