THE ENTOMOLOGIST. 87 



1864. It went into the pupa state on the 2ud of July, and 

 appeared in the perfect state on the 25th. I have all three 

 specimens in my possession, and I cannot see any difference 

 as regards the size and colour. — JV. West ; 6, Green Lane^ 

 Royal Hill, Greenwich. 



28. Beaniiful Variety of Callimorpha dominnla. — Mr. 

 H. J. Harding, of Deal, has captured a very extraordinary 

 variety of CalHmorpha dominula, in which all the usual gay 

 tnarkings are absent ; the uniform colour of the insect being 

 steel-blue approaching to black. 



29. Toxocampa Craccce in Devonsliire. — The Rev. Edward 

 Horton, of Lower Wick, Worcester, is again the fortunate 

 captor of this interesting addition to our lepidopterous 

 fauua : he has distributed these rarities with his accustomed 

 liberality. 



30. Food-plant of Ino Geryon. — The larva of this species, 

 found by the Rev. E. Horton feeding on HeHanthemum vul- 

 gare (sun cistus), has been tried with Rumex acetosella (sor- 

 rel), the food of its congener, 1. Statices, and is found to 

 refuse that plant : since, therefore, each species confines 

 itself exclusively to its peculiar food-plant, there seems good 

 reason for supposing them permanently distinct. 



31. Entomological Society, August 1, 1864. — Mr. Bond 

 exhibited Gelechia pinguinella, a species new to Britain, 

 found on the trunks of poplars near London ; and a speci- 

 men of Nyctegretes achatinella, one of the rarer British 

 Phycidte, captured by Mr. Thomas Brown near Yarmouth. 

 Mr. Weir exhibited an albino variety of Eubolia bipunctaria, 

 caught on the South Downs. Mr. M'Lachlan exhibited a 

 specimen of Libellula striolata, from Montpellier, having the 

 veins at the basal part of the anterior wings covered with 

 specimens of a red species of Acarus. Prof. Westwood 

 remarked that the Acari had probably taken up their posi- 

 tion for the purpose of sucking some fluid matter, which went 

 to show that the wing-veins were not (as had been supposed) 

 mere horny matter, not containing fluid. Mr. Smith doubted 

 whether the Acari had placed themselves on the wing-veins 

 in search of food or suction; humble-bees were often covered 

 with these insects, and 300 or 400 Acari might be found on a 

 single specimen, so that the humble-bee actually fell to the 

 ground through their weight ; he thought that the Acari fed 



