494, Prof. F. Klapalek’s descriptions 
Ent. Soc. 1869, Part J.) from one g and 9? ; but since 
that time, as the author has kindly informed me, it has 
not been seen by him. I hope, therefore, it will not be 
out of place to give some critical remarks on it, as I have 
been so fortunate as to collect a series of specimens in 
two separate localities in Bulgaria and Hastern Roumelia. 
The most important characters in which this species 
differs from P. germanica, L., to which it is very nearly 
allied, are in the furca (“appendices segmenti 9,” 
MclLach.), whose branches are longer and have their 
apex obliquely truncate and in the larger process of the 
third dorsal segment. The wing markings are similar to 
those of P. germ mica, var. apicalis, St. Two of my 
specimens are quite typical, agreeing with the description 
and figures in all but in the dorsal process of the 3rd 
abdominal segment, which does not appear larger than 
in germanica. From this species they differ, besides the 
other characters namedabove, by the shining black occiput, 
the brown colour which covers regularly the whole occiput 
in P. germanica is limited to the hinder eye margins. 
Abdominal segments 7th and 8th marked on either side 
by a large black shining spot; furca fuscous, almost 
black at the apex, with dense strong black setz ; on the 
rostrum are two very distinct shining black lines. Another 
specimen agrees in all respects with the first two, but the 
pterostigma is only yellowish without the usual dark- 
brown spot, instead of which it has a little point at the 
base of the sector and two similar below the pterostigma. 
Two other specimens agree with the last, but have in the 
pterostigma a dark brown spot, which is smaller than 
in typical examples. A series of specimens are in the 
markings similar to P. germanica, but the anal parts are 
those of gibberosa. One most aberrant example is 
smaller, very dark, having the 7th and 8th abdominal 
segments wholly shining black ; the wings are transparent, 
very shining, with a slight greenish and brownish tinge ; 
the spots are conspicuous, and, besides the above- 
named, we find two dark brown points below the middle 
of the anterior margin of the wings. A series of ? 
show no difference from those of P. germanica collected on 
the mountains of the Bohemian frontier. They are very 
dark, and with conspicuously marked wings. I do not 
hesitate to identify these examples, at least the first named 
five, with P. gibberosa, McLach., and I am inclined to 
