Page 511, "Lespes" changed to "Lespès."
Page 511, "MacLaurin" changed to "Maclaurin" (Maclaurin, on mathematical principles)
Page 511, "Macropodos" changed to "Macropodus" (Macropodus, 244)
Page 511, "M'Cook" changed to "MacCook" (MacCook, the Rev. Dr.)
Page 512, "M'Cready" changed to "M'Crady" (M'Crady, on larva of Medusæ)
Page 513, "Myrionphyllum" changed to "Myriophyllum" (Myriophyllum spicatum, 243)
Page 513, "Ervingii" changed to "Ewingii" (Noctua Ewingii, 238)
Page 514, "capillata" changed to "capillatus"; "332" changed to "232" (Podocerus capillatus, 232)
Page 515, entry under "Recognition," "by snakes and tortoises," "269" changed to "259." (tortoises, 259-61)
Page 515, "Croom" changed to "Croora" (Robertson, Professor G. Croora)