ADDITIONS AND CORRECTIONS
vi [line 11], for Heilkunft read Heilkunst.
18 [line 2], for tarsi read tarsus.
32 [line 21], and legend under [fig. 23], for C. (Conorhinus) abdominalis read Melanolestes abdominalis.
47 legend under [figure] for 33c read 34.
92 line [22] and [25], for sangiusugus read sanguisugus.
116 legend under [fig. 83], for Graham-Smith read Manson.
136 [line 10, from bottom], insert "ring" after "chitin".
137 [line 3], for meditatunda read meditabunda.
145 [line 7, from bottom], for Rs read R5.