ERRATA. 



Page 8, line 1, for " thuncatus" read "teuncata." 



" ^3, " 8, " "body" read "border. " 



" 153, " 4, " "7" read "6." 



" 154, " 5 from bottom, for " 7 " read "6." 



" 155, " 14 " " " "fragments "read "segments." 



" 156, " 7, for "7" read "6." 



" 163, " 3 from bottom, for " center" read " centers," 



" 191, " 15, for "rhombica" read "rliombicus." 



" 191, " 11 from bottom, for " opposed " read " apposed." 



" 203, " 7 " " " "c" read "a." 



" 217, " 12, for "tabular "read "tubular." 



" 250, " 2, " "plain" read "plane." 



" 327, " 14, " "sekeata" read "SEREATA." 



" 351, " 14, " "TJroconylus" read"Urocordylus." 



" 368, " 14, " "mackueous" read "maceueus." 



'' 370, " 12 from bottom, for " fitted " read " filled." 



" 370, " 8 " " after "other" read "genus." 



" 371, " 12, for "proximately" read "proximally." 



" 372, " 11 from bottom, for "lennicorne" read " tenuicorne." 



" 373, " 8 " " " "spaces" read "species." 



" 374, " 20, for "four" read "five." 



" 476, " 11, after " end " insert " of." 



Note. — ^The proof of Prof. Cope's contribution, from page 351 to page 385, was not 

 read by the author, and he is to be absolved from responsibility for the typographical 



errors contained in this portion of his report. 



J. S. N. 



