removed aiid replaced with panels 2 inches thick. This change was made 

 on January 10, 19^5. In Novemher 19^5 it was requested that the panels 

 on the test "boards te removed smd replaced "by a new series to he 

 operated on a if-month "basis instead of on the 8-month basis which was 

 "being employed. The panels on the test boards which were still being 

 operated at Stations 2 and k were removed on Jeuiuary 10, 19k6, and the 



operation of these boards was discontinued at this time. 



» 



In many of the control pajiels at each location, Teredinidae 

 were embryonic, but they ranged up to h3 mm, 120 mm, UO mm, and 12 mm 

 in length at locations 1, 2, 5^ sloI k, respectively. The TOftTlTtnTtn 

 number recorded in any one of these panels was 660 up to 12 mm long at 

 locatio'n No. 1, approximately i«-,000 up to 15 mm long at location No. 2, 

 approximately 1,000 up to 2U mm long at location No. 5, and 660 up to 

 10 mm long at location No. 4. 



Most of the test pauiels at each location were either filled or 

 more or less completely riddled. They became riddled when submerged 

 for as brief a period as 5 months, tfeiximum lengths of 280 mm, 

 525 ram, 520 mm, and 510 mm were recorded at locations 1, 2, 5, and 4, 

 respectively. An unusual number of species was recorded on panels from 

 these locations. Those species identified included Ban]<ria hawaiiensis . 

 Teredo ( Lyrodus ) diegensis , T. ( Lyrodus ) sp., T. disconus , T, fullerl , 

 T. gregoryi , T. milleri , T. trullif ormis , T. ( Psiloteredo ) sp., 

 T. C Teredora ) sp., and Teredo sp. The attack rated very heavy at all 

 four locations. 



2. Limnoria . Limnoria were active throughout the period of the 

 test, occurring in all the panels, both control and test, at locations 

 5 and k and in nearly all of both types at the other two locations. The 

 maxlTmim attack rated medium heavy at locations 1 and 2 and heavy at the other 

 two locations. 



5. Pholadidae . No Pholadidae were recorded at any of these 

 locations . 



A53.0l|- Fouling Agents 



1. Silt . Silt occurred on all the panels, both control and 

 test, at each of the four locations; nearly all the deposits ranged 

 from traces to light. 



2. Algae . Green algae occurred on only 2 control panels at 

 location No. 1, on one control and 2 test panels at location No. 2, 

 on 5 control panels *'and 9 test panels at location No. 5* and on 8 

 control and 10 test panels at location No. h. The growths were mostly 

 traces but were occasionally light. 



2k7 



