190 THE ENTOMOLOGIST. 



and a half of each other, each confined to its own food-plant. 

 P. glohularlce and P. geryon are mixed together, and P. glohularia 

 and P. statices also mingled ; but from the totally different position 

 in which Helianthemum vulgare grows to that occupied by Rumex 

 acetosa, I have never found P. geryon intermixed with P. statices. 

 The three species of Procrls are gregarious, and the females have 

 but little powers of flight, so that each tlock on Cliff Hill has 

 probably been isolated for thousands of years ; especially is this 

 the case with P. geryon and P. statices, and it would be very 

 interesting to ascertain whether there is any local variation in 

 flocks occurring in widely different localities and in different 

 geological formations. I should welcome with gladness the 

 opportunity of inspecting any of the species obtained from other 

 counties ; but I fear that the subject of local variation is not much 

 cared for by entomologists generally, as my request of a similar 

 character with regard to Gnophos ohscuraria met with but one 

 response, and of Pieris napi with none. — J. Jenner Weir; 

 6, Haddo Villas, Blackheath, S.E. 



Ccenonympha davus — Ocelli on the under side of Second- 

 aries. — Newman, when describing this insect in the ' British 

 Butterflies,' p. 101, writes of the under side of the secondaries 

 thus: — "The grey or marginal area has a median transverse 

 darker cloud, in which the position of a series of ocellated spots 

 is indistinctly indicated by mere dots," This description 

 accurately describes the usual coloration of the species ; but on 

 the South Downs, near Lewes, the insect is frequently found with 

 well-defined ocelli on the under side of the hind wings. During 

 the month of June, this year, I have paid particular attention to 

 this very common and generally neglected species, and could 

 easily have captured dozens of the variety in question ; I have 

 some with as many as six well-defined ocelli, five having the 

 black centre, with a white pupil. I found also that there is much 

 variation in the size of the ocellus on the under side of the 

 primaries ; in some it was scarcely more than half, and in others 

 double, the size of the figure in Newman's work. Occasionally, 

 but rarely, the spot on the upper side of the primaries is wanting. 

 — J. Jenner Weir; 6, Haddo Villas, Blackheath, S.E. 



Rare Lepidoptera near Portsmouth. — On the 15th of 

 September, 1879, a friend of mine, Mr. T. Larcom, of Shaftesbuiy 

 Terrace, Gosport, took a specimen of Choerocampa celerio in his 



