178 [Januai> , 



hardly think anybody will call the latter a plentiful species. No 

 species is really rare if you know when and where and hoiv to look for it. 

 My specimens were taken on a swampy part of the open forest land, 

 hitherto untrodden by the feet of entomologists, where little else than 

 tufts of cotton grass (Eriophoriim) and small stunted heather and the 

 asphodel grew ; it did not occur on the drier parts of the moor, 

 neither did it vary at all, except as all moths are liable to do in 

 quality and size or sexually. All my specimens were tinged with 

 pink when alive. I never before took it, except singly. 



Sideria achafatia, S. V. — Touching rarity or abundance, Mr. 

 Barrett tells us that this species " swarms sometimes " near Mr. 

 Stainton's residence : T have collected insects regularly in all sorts of 

 places, principally north of Stafford, since 1826, but never saw a good 

 or living specimen in the north ; on the other hand, Mr. Stainton 

 assures me he never had the pleasure of taking half-a-dozen Antithesla 

 marginalia. 



Dichelia Grotlana, Fab. — Of this variable species, I have bred 

 many forms, some of them being so like Mr. Barrett's description of 

 D. gnomana, Linn., that they have stood named var. D. Intiorana ; but 

 as these were bred from what I took to be Grotiana larv?p, I only 

 supposed, and only still suppose, them to be varieties of that species. 

 Some years ago, Mr. S. Stevens wished me to think them different. 

 but I was too dull to see it. 



Rose Bank, Fletcher Grove, Liverpool : 

 November 2nd, 1872. 



NOTES ON TRICEOPTERYGIA, WITH DESCEIPTIONS OF TWO 

 NEW SPECIES. 



BY THE KEY. A. MATTHEWS, M.A. 

 MiLLIDIUM TRISULCATUM, Aube. 



Examples of this species sometimes occur, in which the lateral 

 sulci of the thorax are almost parallel to the medial. When I first 

 observed specimens presenting this variation, I supposed that they 

 would belong to M. triramosuvi, Mots., but a subsequent and very 

 careful examination of a largo series has convinced me that they are 

 only a variety of 31. tn'sitlcafmn. The type of M. inramosum which 

 I received from the late Col. Motschoulsky is a mtich smaller and; 

 narrower insect, with the general surface of its head and thorax 

 perfectly smooth, haviiig no trace of the tubercular or rathei 

 alutaceous sculpture which is evident under a very high magnifying 

 power in all specimens of M. trisulcahnn. 



