CORRIGENDA. 



Page. 



56. In the "key," thirteenth line from top, read tyrrelli for tyrelli. 



73. Seventh line from top, read Herrick for He rick. 



95. Second line from bottom, read americanus for Americnnus. 

 101. Under Cyclops piilcliellus, supply Plates XXVII, Figs. 4, 5; XXVIII, 



Figs. 5-8. 

 105. Middle of page, read m. q. fuscus for m. g. fuscus. 

 114. Twelfth line from top, read Cydopina gracilis for Cyclopsina gracilis. 

 120. Fourteenth line from top, read lascivus for lascious. 

 124. Fourth line from bottom, read Copcpoda for Copepodx. 

 126. Second line from top, read Cladocera for Cladocerae. 

 129. The last three page numbers of the "key," and the last within the brackets, 



should read respectively 132, 134, 134, 135. 

 146. Third line from top, read Sididx for Sidide. 



148. Third line from bottom, read Sida brachyura for Sida brauchyura. 

 150. Transfer the plate reference under Latona to Latona setifera. 



174. Under Ceriodaphnia coruiita, supply Plate LXVI, Figs. 4, 5. 



175. Middle of page, read Ehypophilus for Bipophihts. 



195. Eighth line from bottom, read D. kalbergensis for D. kahJbergensis. 



203. Middle of page, read cedersticemii for coederstroemii. 



205. Thirteenth line from bottom, read D. schsefferi for D. scsehfieri. 



210. Near middle of page, read Macrothrix (?) pauper for Macroihrix (?) pauper. 



218. Read Acantboleberis curvirostris for Ancautholeberis ciirvi- 



I'ostris. 

 231. Eleventh line from bottom, read Alona elongata for Alono elongaia. 

 255. Star Plfiiroxiis straruiueiis. 



258. Under PleiiroxiiS procurvus, add LXV, Figs. 6, 7. 

 260. Under Leptorljyncbiis falcatus, supply Plate LXII, Fig. 17. 

 266. Under Polyphemus pediciiliis, read LIX for LXIX. 



272. Read Daplinia longireniis for DapLnia lougireimis. 



273. Read Ilyociyptus longiremis for Iljocrypt"S longireiiiiis. 



274. Read Tjcydigia quadrang-ularis Leydig for Leydigia quadrangu- 



laris Leydig-. 

 274. Read Diiiilievidia setiger for Dunlievidia Setiger. 

 293. Fourth line from top, read adductor for abductor. 

 301. Read Caiidoiia peircei for Candoiia Peircei. 



306. Read Cypiia optlialmica (Jurine) for Cypria optliallilica Jurine. 

 321. Tenth line from top, read Cypris gibberula for Cypris qibheraJa. 



Unexplained remain, Plates XXY, Fig. 15; LVII, Fig. 9; LXI, Fig. 5a; LXV, 

 Fig. 9, and a few unnumbered figures. 



A number of the plate references were supplied from the explanations of plates* 

 A few species are noticed only in the index and the plates. 



I am indebted to Professors Birge and Marsh for deciding between the conflicting 

 spellings of names in the manuscript that were not observed until the index was pre- 

 pared in most cases from the final forms. 



I embrace this opportunity to acknowledge the courtesy and good nature of the 

 officers connected with the manufacturing department of the Pioneer Press Company, 

 particularly of Mr. George R. Moirissey. 



H. F. N. 



