38 CA.XA10GTTE OF MOTHS. 



72. C. margaritellus, Hb. 



Cramhus margaritellus. Staint. Man., vol. ii., p. 183. 



,, ,, Leech, Brit. Pyr., p. 78. 



„ „ Meyr. Hdbk, Brit. Lep., p. 393. 



Imago. Leech, pi. viii., fig. 13. 



Mr. Sang took this pretty Crambus at Wolsingham, Upper 

 "Weardale, on 9th August, 1874. It is met with in the Lake 

 District, so its occurrence in the western part of Durham is 

 what might be looked for. I have no other records as yet. 



73. C. perlellus, Scop. 



Crambus perlellus. Staint. Man., vol. ii., p. 184. 



,, ,, Leech, Brit. Pyr., p. 80. 



,, ,, Meyr. Hdbk. Brit. Lep., p. 393. 



Imago. Leech, pi. ix., fig. 4. 

 Lakta. Buck., vol. ix., pi. clx., fig. 13. 



The only locality I know of in these counties for this species 

 is a meadow adjoining the churchyard at Monk Hezleden, near 

 Hartlepool. The meadow slopes down to the top of the dene, 

 and the lower part is much grown over with stunted birch, 

 whin, and such like growth, the soil scarcely covering the 

 limestone rock. Here, of course, the grass is not cut, and 

 Perlellus occurs in abundance. The specimens are nearly 

 always silvery white, though it sometimes has darker streaks. 

 They are also distinctly larger than the Greatham specimens of 

 Warring tonellus. 



74. G. warringtonellus, Stainton. 



Cramhus warringtonellus. Staint. Man., vol. ii., p. 184. 



„ ,, Leech, Brit. Pyr., p. 81. 



,, perlellus. Meyr. Hdbk. Brit. Lep,, p, 393. 



Imago. Leech, pi. ix., fig. 5. 

 Lahva. Buck., vol. ix., pi. clx., fig. 14. 



It is now considered doubtful if this be more than a variety 

 of form of Perlellus, but they certainly occur here in places of 

 widely different character. Mr. Gardner found Warringtonellus 



