Addenda et Corrigenda. Page 70, line 20, for propodos read dactylos 73, line 8 from bottom, for Philongria read Philougria 77, line 12, for pleon read pereion 79, line 6, for ? Montaguana read ? Montagua 93, line 11 from bottom, for fuscate read furcate 140, line 15, for mangei read maugei 148, line 11 from bottom, for small read same 149, line 8 " and elsewhere, for Philongria read Philougria 162, line 14 " for Lezdig read Leydig 166, line 7 " after part dele semicolon and insert a comma 175, line 1, for ascil read axil 176, line 4, for limbs read lines 175, line 7 from bottom, dele Theraphosides 176, line 9, for ascils read axils 177, line 6, for clumps read culms 177, line 11, for Thomisides read Salticus 188 and 190, in title, for 6th April read 30th November 194, line 13, for interior read exterior 198, line 12 from bottom, for ansonii read ansonii 200, line 6 " for Saprolignia read Saprolegnia 209, line 4 " for here read where 221, line 5, for vasculan read vascular 221, line 18 from bottom, for nitrata read nitrate 221, line 8 " for this read their 224, line 19, after being insert eleven 226, line 2 from bottom, after loc. cit., p. insert 58 and 60 227, line 11 " for epidymis read epididymis 228, line 7, for cœlum read cœlome 228, line 21, for on read as 228, line 7 from bottom, for cerebellan read cerebellar 230, line 3, for like read between 231, line 4, for Mechelian read Meckelian 233, line 3, for as read in 235, line 4 from bottom, for the read two 235, line 3 " for this read their 273, line 6, before plants insert naturalized 277, line 8 from bottom, for larva read lava 282, line 19, for E. and L. read E. and Z. 283, line 18, for eeptophyllum read leptophyllum 283, line 24, for Larum read Carum 284, line 18, for Pakari read Pakiri