﻿p. 59, 1. 16; after long, insert: entire or emarginate at the apex. 



P. 65, 1. 11; for: climates — read: zones. 



P. 67, 1. 1; P. 68, 1. 17; P. 69, 1. 16 fr. b. ; for: obovate— reac/ : ovate 



P. 70, 1. 5; H. subdeinlssuni, Christ. — Insert: See the Appendix. 



1. 5 fr. b. ; obovate should be : ovate, 

 P. 71, I. 8 fr. b. ; IE. Sliiiiiea.nuiii, Spr. — Insert: See the Appendix. 

 P. 71, 1. 5 & 17 fr. b.; P. 1% 1. 4; P. 75, 1. 3 & 10, & 7 fr. b. ; P. 74, 1. 



1 & 7; P. 77, 1. 17 fr. b. ; P. 78, 1. 7 & 15 fr. b.; P. 80, 1. 



12 fr. b.; P. 93, 1. 12 fr. b. ; P. 94, 1. 16; P. 95, 1. 7 ; P. 96, 



1. 13 fr. b.; P. 104, I. 1; P. 145, 1. 8; for: obovate — read: 



ovate 

 P. 75, 1. 15 — 10 fr. b. should be modified as follow^s: 



if. Indusium without crest-like ridges at the base. 



(29) H. tunbridgense. 

 ^.jf:. Indusium with some [i or more) indistinct, hardly elevated, 

 longitudinal, crest-like ridges at the base. 



(50) H. holochilum. 



P. 76, 1. 15; on the back, should be : on the back throughout. 

 1. 17 — 18 should be modified as follows: 



1.1.1. Indusium provided with irregularly spinoso- fimbriate appendages 

 on the back at the base. 

 1. 15 fr. b.; after down, insert: valves retuso-denticulate. 

 1. 15 fr. b. ; after down, insert: valves sharply toothed. 

 1. 11 — 10 fr. b. should be modified as follows: . 



1.1.1.1. Indusium provided with rather close, longitudinal crests on the 

 back at the base. (44) H. brachyglossum. 



P. 78, 1. 14; climates should be: zones 



1. 15 — 12 fr. b. ; surrounded by a row of longitudinal crests, should 

 be: provided with some (1 or more) indistinct, hardly elevated, lon- 

 gitudinal, crest-like ridges, 



P, 81, 1. 15; on te back, should be: on the back throughout, 



P. 82, 1. 4 — 5 should be modified as follows: 



of the way down, the base provided with deeply and irregularly spinoso-fim- 

 briate appendages, the valves slightly retuso-denticulate towards the apex. 



