THE EGG OF COSSUS ORG, STRECK. 317 



continental species. Since then I have made further acquaintance 

 with this bright little moth, and as several entomologists have asked 

 questions by letter, I think you may like to have the scanty information 

 at my disposal. T. pronubana makes its appearance at the extreme 

 end of August*, and continues up to the end of the first week of 

 October — weather permitting. To any but collectors of the 

 Tortricids it might escape attention, I should think by being mistaken 

 for a small Tortrix pyrastrana, but though very variable, it is roughly 

 distinguishable from that species by its black band, especially decided 

 in the male, the under wings being very like those of Triplmena pronuha 

 in miniature. The yellow underwings are also of a much more coppery 

 and fiery orange, but the two sexes are very dissimilar, as in T. ■pyras- 

 trana. So far as I know, too, the latter is over before T. pronubana 

 comes on. Another curious difference is that while T. pyrastrana 

 comes freely to sugar in my garden, T. pronubana, though abundant 

 within two yards of several sugaring places, has never been seen by 

 me at the sweets, though I have found it at rest by the aid of a lantern 

 on the Enonymus hedge close by. This appears to be its food-plant, for I 

 bred a ? from a pupa found in a twisted shoot thereof on September 

 29th, and many empty pupa-cases were observed. The imago also is 

 usually observed hovering over or resting thereon, and last year I found 

 eggs by the side of a female which had evidently just laid them on 

 the leaf of this plant. The eggs make a bright triangular shaped 

 splash of vivid green, almost exactly the colour of the brighter tints of 

 this evergreen. The customary time of flight of the imagines is from 

 8 a.m. to 10 a.m., in the bright sunshine. It appears most probable 

 that it only wants looking for at these hours on the sunny side of some 

 of the Euonymus hedges, now so common in the south of England, to 

 be found to be a truly British subject. On September 20th and 21st 

 last, between 8 a.m. and 9 a.m., I observed the males flying in dozens 

 round the hedge, and soon discovered several females, some already 

 paired. I have never netted a female, but always found them by 

 searching on the upper side of the slightly curved fully developed leaves 

 of the Euonymus, but out of the direct glare of the sun. I fancy it 

 flies very seldom, neither have I observed the species to fly at dusk 

 when I am putting on the sugar as I often see others of this family. 

 In conclusion let me say that I hope these remarks will be regarded 

 leniently as the opinions of an amateur, as I have made no study of 

 Tortricids, and j)rofess no knowledge of their habits. 



The species is no. 781 in Staudinger and Wocke's Cataloy (1871), 

 p. 238, and is there placed in group H {Heterognomon, Led.) of 

 Tortrix, L., between T. viridana and T. insolatana, and "Eur. meridi- 

 onalis" only is given for its distribution. Tortrix pyrastrana (or rather 

 podana, Scop.), with which it is here compared, is placed in this 

 Catalofi, p. 235, in group A {Cocoecia, Hb.), between T. jnceana and T. 

 testaceana. 



* Occurs in April on the Eiviera where we have taken it not uncommonly.- — Ed. 



The egg of Cossus ore, Streck., with some notes on the egg of 



C. ligniperda. 



By T. A. CHAPMAN, M.D., F.Z.S., F.E.S. 

 Some ova of Cossus ore, Str., were received from Mr. Tutt. They 



