THE NAIADES OF MISSOURI 1 99 



Page lOo, line 2, for "climed" read "claimed"; line 27, for " Ptero- 

 sygna" read " Pterosyna" . 



Page loi, line 19, for "bue" read "blue". 



Page 103, line 27, for the adverb. " ventrad" read as adjective, 

 " ventral ". 



Page 104, line 33, insert next line below: — "(Type, Lastena ohiensis 

 Raf.);" line 36, separate "outer " and "and". 



Page 105, line 26, for "p." read "PI."; line 36, for " pericardinal " 

 read "pericardial". 



Page 106, line 10, omit comma after "distinct" and supply after 

 " veining". 



Page 107, in Text- Fig. 7, transpose "An" and "PO". 



Page III, line 33, for "brownsih" read "brownish-yellow". 



Page 112, line 22, for "moss" read "mass"; line 33, for "mosses" 

 read "masses". 



Page 117, line 35, insert next line below: — "(Type, Anodonta ferus- 

 saciana Lea) " 



Page 118, line 6, omit "External Structuies"; line 18, add "about" 

 after "being". 



Page 119, line 30, insert next line below: — " {Alasmidonta undulata 

 Say) ". 



Page 122, line 26, for "known" read "shown". 



Page 124, line 10, before "containing" insert "each" and for comma 

 use semi-colon after "larvae" and also omit "are"; line 11, omit "situ- 

 ated"; line 12, for "min" read "mm"; line 16, for "obtusely" read 

 "obtuse". 



Page 129, line 34, for "facsiolaris" read "fasciolaris" ; as indicated 

 in Foot-note for this page, for all statements of " EUipsaria clintonensis 

 {Simpson)" read "EUipsaria occidentalis {Conrad)" . 



Page 130, line 7, for period after "p. 301 " use semi-colon. 



Page 132, line 8, use semi-colon after "interdentum". 



Page 133, line 22, for "nodulat" read "nodulated". 



Page 136, line 2, for "J" read "Jl."; line 16, omit comma after 

 "height". 



Page 143, line 30, for " pleasii" read " Peasii" ; (do. page 144, line 

 29; do. page 145, line 20); line 32, for "clolored" read "colored". 



Page 145, line 26, for " utterbackii" read " UUerbackii" ; (do. line 31). 



Page 148, line 18, insert "IX" after "pi". 



Page 152, line 15, for " simpsoni" read " Simpsoni" ; (do. page 155, 

 line 3). 



Page 153, line 38, for "bysuss" read "byssus". 



Page 155, .line 34, for " leniussimus" read " tcnuissimiis" . 



Page 159, line 28, for " Lamack" read "Lamarck". 



Page 160, line 14, for " more" read "not" and for "not" read " nor". 



Page 163, line 34, for " proptera" read " Propt:ra" . 



Page 164, line 20, for " tecxasensis" read " texasensis" . 



Page 168, line 6, for "central" read "center"; after line 10 supply 

 the following deletion from text:— 



