88 [September, 
a series of examples. These latter being all nearly alike, and sent 
without admixture of other allied forms, induce me to think the 
present a decidedly distinct species of Heliconiiis. 
98. — Heliconius albucilla. 
Exp. 3" 9'". Very closely allied to H. melicerta, differing in 
nothing but the following points : — The central spot of the fore-wing 
white instead of yellow, the spot nearest the hind-angle orange-tawny. 
Hind-wing orange-tawny, with a narrow black outer margin, and a 
narrowish, contimious, black, discal stripe. 
Panama. 
99. EUEIDES LEUCOMMA. 
^ . Closely allied to Eu. lyhia, Fab., agreeing with it in size and 
shape of wings, but the latter a little shorter, and the fore-wing more 
broadly rounded at the apex. Colour black, with an orange-tawny 
vitta and the inner margin of the fore-wing, and a very broad stripe on 
the hind-wing, occupying the whole middle part of the wing, black ; 
apical part of the fore-wing crossed by a short belt or elongate spot of 
pure white, divided by three dusky nervures. Wings beneath ; same as 
above, but paler, and costa of hind-wing paler tawny at the base ; the 
outer border of hind-wing has a row of broad and indistinct pale ashy 
lunulea. Antennae black ; collar with four tawny spots ; abdomen tawny. 
Panama. 
{To he coidinued.') 
Bock Lepidoptera of the Isle of Man. — Situated in the heart of the British 
Islands, sea-girt, yet land-surrounded, and of a temperature more equal than any 
other in the home^group of Great Britain, it might with reason be anticipated that 
on this charming island many species were to be found which would well repay the 
investigation of the naturalist; and a very few days' experience of its capabilities 
warranted Mr. Gregson (to whose persevering research and liberal information Mr. 
Greening and myself owe the good fortune of our visit) in forecasting the great and 
important success attending even a short study of one of the characteristic localities 
of almost a terra incognita. As a proof of the careless way in which the island has 
hitherto been " worked," I extract the following from the popular and interesting 
shilHng " Guide to the Isle of Man," — where, speaking of its Natural History, we 
are told that " the Entomology of the island is not attractive." 
Collecting the rarities on which we were chiefly bent — (Sesia philanthiformis 
and the new Dianthacia) — may, without self-complacency, be stated to be no work 
for Parlour Naturalists ; and unfortunately, — woman's rights notwithstanding, — 
no lady-collector can ever aspire to such exciting and interesting mental and bodily 
elevation. Essentially rock species, to this, possibly, may be attributed the great 
