e . MolluBca (non'borlng molluake ) . Miscellaneous mollusks 

 occurred occasionally, mostly in small munbers, at all five locations 

 as follows: Anomia (jingle -shells) occurred on 2 test panels at the 

 Temporary Pier, on a single control panel ajid k test panels at the 

 Permanent Pier, on 9 test panels at the Marine Railway, and on 2 



test peuiels at the Woody Island Pier, 50 "being the maxLinum numher recorded 

 on any one pemel. Mytilus (mussels) occurred on 5 test panels at the 

 Temporary Pier, on a single control panel sind on 5 test panels at the 

 Permanent Pier, on 9 test panels each at the Marine Railway and Woody Island 

 Pier, and on 5 test panels at the Army Pier. The maximtim number on any 

 panel waB 500 minute specimens. Saiicava occurred on k test pajiels at the 

 Permanent Pier, on 2 test panels at the Marine Railway, on 3 test panels 

 at the Woody Island Pier, and on 5 test panels at the Army Pier, 50 being 

 the maxlmtm number on any one panel. 



f. Chordata (tunicates ). The only evidence of tunicates 

 was il- specimens recorded on a single test panel at the Temporary Pier. 



A35«05 Summary euid Conclusions 



1. Installation . Of the 5 test boards of the panel type installed 

 July 15, 19i4-'4- at different locations at Kodiak, KodiaJc Island, Alaska, 5 

 were lost and discontinued after being carried away by ice, and the other 



2 are still being operated. The results of the tests have been summarized 

 to the end of 19ii-7. 



2. Test Results . 



a. Borers . Teredlnldae were more or less active at each of 

 the five locations, but the Intensity of the attack varied at the 

 different locations and in different years. The attack at the Temporary 

 Pier rated very heavy in both 19^5 and 1946. At the Permanent Pier, it 

 rated moderate in 19^5* medium heavy in 19^6, but only slight in 19^7. At 

 the Marine Railway, it rated very heavy in 19^5 tut only a trace in 19^6. 

 At the Woody Island Pier, there was a moderate attack of Teredlnldae in 

 19^5, medium heavy in 19^6, and only a trace in 19^7. At the Army Pier, 

 the attack rated moderate in 19^5. Bankia setacea, the only species 

 present, clearly appeared to occur in greatest numbers and cause the most 

 destruction in the lower panels, which would locate the miaxlmuBi attack 

 close to the mud line. The breeding season appears to extend from late 

 February to the middle of September, late October, or even to late December 

 at locations where B. setacea is active and destructive. Limnoria also were 

 more or less active at all five locations and in different years. The 

 attack at the Temporary Pier rated only a trace in 19^5 and medium heavy 

 late in 19^6 and early 19^7. At the Permanent Pier, it rated but a trace 

 in 1945 and 19h6 and slight in 19'<-7. At the Marine Railway, it rated slight 

 in 1914-5 and medium heavy in 19^6. 



150 



