65 



sufficient material for comparison. He stated that those 

 who considered T. crepuscularia purely as a larch-frequenting 

 species were in error. It was exceedingly abundant in many 

 woods where larch did not occur. He also pointed out 

 some strange errors that had arisen through the synonymy, 

 and corrected a report in the " Proc. South London Ent. 

 Soc," 1887, p. 39, which purported to be that of an exhibit 

 that he himself had made. In conclusion, he observed that 

 he had not touched on much ground which would have 

 supported his contention that these were distinct species, 

 but that this was now being worked up by Mr. Hewett, of 

 York, who was engaged in the preparation of a paper on the 

 whole matter. 



Mr. Henderson said that he had collected in most of the 

 woods near Reading, and believed he had taken T. crepus- 

 cularia in the very wood from which Mrs. Bazett's supposed 

 second brood of T. bmndularia had come, and in which it 

 was stated that T. crepuscularia did not occur. He also con- 

 tributed the following notes : 



" I have studied these two species since I commenced 

 to collect twenty-six years ago, and have many examples 

 from all parts of England, and I have repeatedly bred them, 

 from Berkshire, Surrey, and other localities. In my opinion 

 they are easily separated. T. crepuscularia exists only in the 

 south of England, and South Wales and Midlands. I have 

 seen few north of the Trent. It is double-brooded in its 

 natural state, emerging in March, April, and July to August. 

 T. biundularia, on the contrary, is single-brooded in a wild 

 state, and assumes the imago state in May and June ; it has 

 a much wider range, from Kent and Devon to Wales, up to 

 Morpeth and parts of Cumberland, 



" I am aware that the late Mr. J. A. Cooper succeeded in 

 rearing a single example of a second brood of T. biundularia 

 from larvae fed on knot-grass, and I have had a third brood 

 of T. crepusctdaria in one summer, but these are not to be 

 considered altogether natural. Having seen many thou- 

 sands of both, I would undertake to separate the species, 

 however mixed or arranged, if the specimens have been cap- 

 tured or bred from beaten larvae. The examples bred ' in 

 and in ' are not so easily distinguished, and the black vars. 

 of T. crepuscularia from Wales and black T. biundidaria from 

 Derbyshire have some resemblance ; but I think there is no 

 difficulty in distinguishing one from the other." 



Mr. de Vismes Kane communicated the following note : 



" I send a few examples representative of the range of 



