SCIAl'lIILA I'EN/JANA AttD S. COLQUHOUNANA. 197 



of the localities where they are found would account in a great measure 

 for the difterence in the colour of the fore-wings (I notice that the 

 colour of the hind-wings of both is identical). I find .S. pcnziana 

 resting on a Aveather-bleached paling in Glen Derry, at an altitude of 

 nearly 2,000 feet ; S. colquliounana occurs on the dark rocks of the 

 Kincardineshire coast." 



The reference to the larva having been reared on " sea-pink " 

 by Mr. Gregson, should be carefully compared with the remarks made 

 by Mr. J. J. F. X. King (A'. M. M., vol. vii. (1896), p. 8). He 

 writes : — " The larvie seem to feed on the lichen Avhich covers the 

 rocks ; we found (in Unst) many of the long silken tubes with the 

 pupa-cases sticking out." 



We should be glad to hear from Mr. Barrett, or any other ento- 

 mologist, the present evidence on the other side. We observe with 

 considerable astonishment that Meyrick uses htilaiia for pcnziana in 

 Brit. Lc'pidop., p. 540. 



SCIENTIFIC NOTES AND OBSERVATIONS. 



EUPITHECIA SUCCENTURIATA AND E. SUBFULVATA. With respect tO 



the doubts that have been raised in the Raunl as to the distinct- 

 ness of these species, I think further investigation will show them to 

 be so in every stage. I have bred K. subfalvata in large numbers for 

 the last dozen years, and also E. succenturiata for the last three or four 

 years, and I find that E. succenturiata commences to emerge early in 

 June, and my specimens are all out by the end of the month ; E. 

 suhfnlrata usually emerges during July. I generally commence to beat 

 for larva; of E. succenturiata about the 7th of September, and find them 

 then, in an average season, half-grown ; the larv;e of E. suhfulrata 

 are about the same size in the middle of October. The colour, 

 structure and habits of the larvse are quite different ; with respect to 

 colour 1 should describe the ground to be, in E. succenturiata, warm 

 sepia, in 7'7. suhfulrata, cold sepia. Of the two, E. succenturiata is a 

 more stumpy larva, with a larger head ; it is only to be taken in any 

 number at night, as it rests in the day-time amongst the lower leaves 

 of its food-plant ; J'J. suhfulrata, on the other hand, rests stretched out 

 at full length exposed on the stems and leaves, and can easily be 

 obtained by searching during the day. The chief and most im- 

 portant point, however, by which these species may with certainty 

 be distinguished is in the pupa stage. Probably most lepidopterists 

 who have bred Eupit/ieriac in numbers have been struck by the 

 dili'erence in colour the various species exhibit in this stage ; this is 

 more marked than in any other group of lepidoptera with which I am 

 acquainted ; for instance, it is very difficult to separate a long series of 

 imagines oi E. absinthiata, K. m in uta ta und E. e.c pallid ata : of course 

 the majority of the specimens can be put right at once, but one or two 

 of each species will run into the other, and it is often impossible to say 

 to which they belong ; the pup^, however, are abundantly distinct ; 

 again, E. jasioneata in the imago state runs very closely to F.. <asti(jata, 

 but the pupa is quite diti'erent, and other species could be mentioned 

 in further support of this point. Now it happens that the pupte 

 of the two species we are discussing are very distinct ; I sup- 

 pose I must have had some thousands of E. suhfulrata in my 



