Papilionidce. 105 



About the year 1840,* the famous collection of draw- 

 ings made by Mr. Jones, was deposited for a short time 

 at the British Museum, where I had the opportunity of 

 studying the species of Papilionidce which it contained, 

 and of which I made considerable use in my * Arcana 

 Entomologica,' 1841-1845. The figures in these drawings 

 of P. Thersander were very accurate ones, representing 

 a moderate-sized true Papilio, from Drury's collection, 

 marked as a native of Sierra Leone, with brown wings, 

 having, on the upper side, a cream-coloured fascia ex- 

 tending across them, being macular on the fore-wings, 

 and placed beyond the discoidal cell, but entire in the 

 hind-wings, and not extending beyond the discoidal cell ; 

 between the fascia and the apical margin of the fore- 

 wings is a small subapical spot, and a lower row of four 

 small submarginal spots, each divided by the longitudinal 

 fold between the branches of the veins, the four middle in- 

 cisures of the fore-wings are cream-coloured, and the one 

 next the anal angle is larger and triangular ; the hind- 

 wings have a submarginal row of cream-coloured spots, 

 mostly divided by the folds between the longitudinal 

 veins ; the incisures are of the same colour, and the 

 spatulated tail is marked on each edge with a similar 

 coloured marginal spot. 



The examination which I was thus enabled to make, 

 enabled me to determine that a specimen of a Papilio, at 

 that time unnamed in the collection of the Bristol Insti- 

 tution, forwarded to me by the care of the late W. 

 Raddon, Esq., and one in the British Museum, were 

 identical with a Fabrician and Jonesian butterfly, and I 

 accordingly figured both sides of the former specimen 

 in my ' Arcana Entomologica,' vol. I. p. 148, pi. xxxviii. 

 figs. 1, 2, under the name of P. Thersander, with a state- 

 ment of the means by which I had arrived at the identi- 

 fication of the species, and with the following additional 

 observations : — '' This is the more necessary to be stated 

 because Donovan, in. his ' Naturalist^s Repository,' vol. 



* At the present time (1871), the seven large quarto volumes, into 

 which this collection of drawings is bound, belong to the family of F. 

 Dawtrey Drewitt, Esq., of Christ Church, Oxford, and Burnham, Arundel, 

 a gentleman of great artistic promise, who proposes to pubhsh the un- 

 figiired and doubtful species represented therein, and who has allowed 

 me to make a very careful collation of the entire collection. 



