ERRATA IN FIRST REPORT. 



Page 16, 14th line from top, for " larvae" read " larva. " 



" 20, 3rd " " for " from " read " upon." 



" 31, Sth " bottom, for ♦' with " read '« in. " 



" 46„ 12th " " for " described " read " describes. " 



" 46,15th " " for " follows " read " follow. " 



" 51, 8th " top, for "once" read "one. " 



" 57, 14th " bottom, for " close " read " closely. " 



" 57, 8th " " for " lying " read " flying. " 



" 88, 15th " top, for " immovable " read " immovably. " 



" 93, 10th " ♦' for "of oyster" read " of the oyster. " 



" 96, 14th " " for " superiors " read " superior. " 



