( iv ) 



twenty years ago, but now entirely disappeared"; Vanessa urtica, "was 

 abundant throughout the district twenty years ago, but now only occasional 

 stragglers are seen"; Vanessa lo, "common formerly, but now rare"; 

 Satyrus ^geria, "formerly on Castle Hill side, now entirely disappeared"; 

 S. Mefjara, the same ; S. Janira, " very common at Almondbury and Castle 

 Hill up to within the last ten or fifteen years, but now disappeared"; 

 8. Hyperanthus, and Chortobius Pamphilus, "formerly at Farnley "; Lycesna 

 Alexis, "Mollicar pastures, formerly"; L, Argiolus, " used to be taken freely 

 among the holly-bushes about Storthes Hall and Carr Wood, but now 

 extinct there"; Hesperia Tages, "formerly in Storthes Hall fields"; Procris 

 statices, " used to occur commonly in a field near Lepton Great Wood, but 

 not seen for last twenty-five years" (it was common at Storthes Hall about 

 1848): Zygmna lonicercB, "along with last, but now gone"; Euchelia 

 jacohace, " used to be found in fields at the bottom of Kirklees Wood, 

 and at Lumb : now gone"; Chelonia plantaginis, "formerly abundant on 

 Crosland and Norland Moors; a few still exist on Norland Moor"; Liparis 

 salicis, "formerly in King's Mill Lane; now entirely gone"; Orgyia pudi- 

 biinda, "formerly, Storthes Hall"; Bomhyx rubi, "formerly common 

 on Crosland and Norland Moors; now extinct"; B. quercus ^ calluncE, 

 " extremely abundant on Crosland Moor up to about 1873, but not seen 

 recently"; Saturnia carpini, "used to be common on Crosland Moor"; 

 Tracheq, piniperda, "used to be common in fir woods at Storthes Hall"; 

 Agriopis aprilina, "used to occur, not unfrequently, at Storthes Hall; not 

 seen of late years"; Heliodes arbuti, " Castle Hill side; not seen there 

 recently"; Euclidla mi and glyphica, "formerly"; Phytometra (Bnea, 

 "formerly on Castle Hill side"; Nyssia hispidaria, "used to be taken in 

 wood at top of Storthes Hall Lane, also in Mollicar and Houley Woods, 

 but not seen of late years"; Asthena candidata, "not seen recently"; 

 Acidalia incanaria, "not seen of recent years"; Abraxas ulinata, "used to 

 swarm in Birks Wood, Woodsome, about twenty years ago, but now not found 

 there ; since then single specimens have been taken in the town, and 

 at Clare Hill"; Hybernia leucophearla, "Storthes Hall and Woodsome, 

 formerly"; EuboUa mensuraria, " used to be in profusion in old pastures 

 behind Castle Hill"; Ennychia octomaculaUs, " Mr. J. Varley used to take 

 this pretty species in plenty in Dungeon Wood and Spring Wood, but it 

 had been quite lost for many years until 1882, when it was reported as 

 having been seen in Dungeon Wood." Could it be that all these thirty 

 prominent species have really disappeared from the district in so short 

 a time? if so, what is the cause of this disappearance? and have other 

 species taken their place ? 



Mr. Alfred Beaumont said that the disappearance of many species from 

 the Huddersfield district during the last twenty or thirty years was an 

 indubitable fact ; and he attributed it principally to the smoke consequent 



