EKRATA 



5 5th line from bottom, for "walls," read " wall." 



13 Fig. 11, insert " gonad (ovary)'' below " kidney." 



33 ,, 25, for " ^V and G nerves," read " X, nerves : G, blood-vessels." 



40 8th line from top, for "disappear," read "disappears." 



40 Hth ,, ,, for " ossifications," read " ossification." 



53 Fig. 42, transpose A and B. 



72 Line 6 from bottom, dttete " the first" and "cervical." 



73 ,. 10 .. for "are," read "is." 



73 ,, 3 ,, for ".proximal," read " anterior." 



73 ,, 2 ,, for " distal," read " posterior." 



92 Fig. 69, in*erf "0" before "orbital ring," and " -s-yy/i///. . symplcrtic." 



96 ,, 71, ,. " K, external gills." 



112 3rd line from top, /or " system," read " septum/' 



119 Fig. 86, for "condyles," read " condyle." 



145 10th line from bottom, delete " B." 



151 4th ,, top, for " show," read "shows." 



155 18th ,, ,, for "stright," read "straight.'" 



164 Fig. 129, for " 1st," read "5th." 



176 17th line from top, for "and thus effect," read " thus effecting." 



298 Fig. 218A, for " Pp," read " Pb." 



304 223.. for " vestibula," read " vestibuli." 



315 3rd line from top, for " eartilaginious," read "cartilaginous." 



340 Fig. 250n, for " tendrinous," read "tendinous." 



438 20th line from bottom, for " Phalcolarctos," read " Phascolarctos." 



445 6th and 7th lines from bottom, for " parosphoron," read " paroophoron. 



450 13th line from top. for " epididermis," reatl " epididymis." 



