332 



' -f — 



Fig. 136. (1) Portion of a 3}'2" x 3^2" x 6" test block submerged eight months at Tutuila, showing dam- 

 age by Limnoria andrewsi and Chelura insulae. The ends of a few Teredo burrows have 

 been exposed. X 5'4- 



(2) .\11 that remained of a 2" x 3 '2" x 5" test bloclc submerged eight months in Honolulu 

 Harbor. The major damage was occasioned by Limnoria andrewsi; Limnoria lignorum and 

 Chelura insulae were also present in the block. ."Ml Teredo were dead as a result of exposure 

 of their burrows by the crustacean borers. X M- 



(3) Portion of block from Tutuila, showing Chelura insulae in [ilace in liurrows. (Ine Lim- 

 noria andreivsi is seen in place near lower left corner. X 5. 



