230 [March. 



blcolor, Hbst., from which it differs in its larger size, in its thorax not being atten- 

 uate in front, rngiilose behind, and with straight angles, and in its less pilosity. In 

 case this identification prore well founded, and Bulmerincqii stand, it may be as 

 well to note that the name (which apparently requires a little " emendation ") is in 

 honour " Dni. Chiliarchae ab Bulmerincq." — Id. 



Note on Pamphila Sylvanus. — Soiue years ago, while collecting Lepidoptera in 

 Kent, I believe I observed that the mules of the common P. Sylvanus made their 

 appearance ten days or a fortnight before any number of the females were to be 

 seen ; and that, consequently, when the females did appear, the males had become 

 comparatively scarce. 



Perhaps, during the coming season some Lepidoptcrist will confirm or refute 

 this : an easy matter, for Sylvanus appears both in May and August. 



It is, of course, useless to speculate upon an unproved phenomenon ; but I 

 would merely hint that, as the larva of the Hesperiida are leaf-rollers, and spin 

 cocoons for their chrysalides, it is possible they may enjoy a comparative immunity 

 from the attacks of Ichneumons, and that nature has therefore employed other 

 means (of which the separation of the sexes may be one) to check the too rapid 

 increase of any abundant species. — A. O. Ward, 10, Stratford Grove, Putney, S.W. : 

 Fehruary, 187-i. 



Notodonta licolora in Ireland. — After reading what has been urged in your 

 January and February numbers, in support of the claim of Notodonta bicolora to a 

 place in the list of Irish Lepidoptera, I must still hold to the opinion I have ex- 

 pressed, that its occurrence requires " confirmation." It is at present merely a 

 dealer's insect, and will, I expect, gradually retire from the market like the Apollo, 

 Podalirius, and virgaureae of the last generation. 



I was at Killarney at the time Bouchard professed to liave captured JY. hicolora, 

 and my first suspicion of its foreign origin was raised by his own unprovoked charge 

 against other collectors of importing pupse ; thus showing what was in his mind, 

 and that he was perfectly familiar with the process. 



He had been at Killarney several weeks before I arrived, and I asked to see his 

 captures. Amongst them were many species not recorded as Irish, but, on my pro- 

 ceeding to make notes, he admitted that he had bred them since his arrival, from 

 pupfe brought from England, alarmed, I suppose, at the number of species I was 

 going to make him responsible for. 



My conviction is strong that N. hicolora also crossed the "silver streak " in the 

 pupa state. 



It was Bouchard, not Turner, as Mr. Ilodgkinson states, who professed to have 

 found a wing of N. bicolora in a spider's web. I saw it in his possession, and I 

 know that Turner utterly disbelieved Bouchard's story. — Edwin Bikchall, Kirk- 

 stall Grrove : February 2nd, 187-4. 



[We decline to insert any further communications on this subject.— Eds.]. 



Description of the larva, Sfc, of Nonagria geminipuncta. — I am happy to 

 acknowledge my obligation to Mr. Howard Vaughan for my acquaintance with this 



