( liv ) 



that he would especially draw attention to the difference 

 existing between the white crepuscrLilaria, Hb., and the second 

 brood of histortata var. consonaria. It has been asserted that 

 " the second brood of bifitortata is typical biwuhdana." This 

 it would be seen is not so, although there is considerable super- 

 ficial resemblance between them. The question as to these 

 being two or one species turned on two points. If it be 

 admitted that the same species may comprise two forms, (1) 

 with distinct facies, (2) with distinct life-cycles, then it must be 

 admitted these may be the same species ; but if on the other 

 hand it be granted, that (1) different facies and (2) distinct 

 life-cycles be sufficient to constitute species, then these must 

 be considered distinct species. The two species have very 

 similar environments, and exhibit a parallelism of variation, 

 but he did not think that parallel variation proved specific 

 identity in confessedly closely allied species. He also exhibited 

 a specimen of Hipparchia semdc, captured by Mr. H. Short- 

 ridge Clarke, on the " Mooragh," near Ramsey, Isle of 

 Man, July 12th, 1896 ; the specimen exhibited the usual 

 small size and bright fulvous coloration of the Isle of Man 

 forms, but had an extra ocellated spot in the third interneural 

 space below the normal apical one. He also exhibited an 

 aberration of Amphidcmjs bctidaria caught in the " Nunnery 

 grounds" near Douglas, July, 1896, the specimen being 

 remarkable in having a white ground-colour without the usual 

 black freckling which has earned for the species the name of 

 the " Peppered Moth ; " the type occurs in the island. He 

 also exhibited a richly marked specimen of Ahr<i.vas tjrofn^ula- 

 riata, caught in " The Curraghs," Ballaugh, July 16th, 1896, 

 which had especially well developed orange markings ; and 

 also a series of Phisia brnctea bred from ova laid by a female 

 in July last. The eggs and larvfc were subjected to forcing 

 treatment from the first by Mr. Finlay of Morpeth, who 

 obtained the eggs, with the result that the whole batch pro- 

 duced moths in October. The larvae were fed on that variety 

 of dandelion grown for salad purposes. One specimen was 

 remarkable in having at the base of the metallic spot on 

 the right forewing a small additional metallic spot. A 

 very dark specimen of Polia chi ab. olivacca was also 



