246 THE ENTOMOLOGIST. 
appear on the sternum of their host earlier than on the abdomen. 
Moreover, all the Odonata carrying Acari on their wings which 
have come under our notice belong to the Anisopterid division, 
whereas all the Zygopterid dragonflies which we have known to 
be infested have borne their parasites upon the inferior surface 
of the thorax or abdomen, or both, but never on the wings. 
Also, as we have seen in the case of the Anisopterid Sympetrwm 
meridionale, mites attach themselves to the lower surface of the 
wings more readily than to the upper surface. These circum- 
stances will be better understood when it is remembered that 
Anisopterid dragonflies rest with their wings spread out hori- 
zontally, while Zygopterid dragonflies in a state of repose 
generally hold their wings erect. And the frequency with which 
the smaller dragonflies are attacked is no doubt accounted for 
by the fact that they habitually cling to rushes and other aquatic 
vegetation when not in flight, while the larger species usually 
take shelter among the branches of trees, high above the level 
of the water. 
Our cordial thanks are due to Mr. Albert D. Michael both 
for directing our correspondence with specialists and for perusing 
these notes in draft; to Mr. Francis P. Marchant for helping with 
the Russian literature consulted ; and to Mr. W. F. Kirby for kind 
and ready assistance rendered on this and many other occasions. 
Notre.—Since the foregoing was written, I have had the advantage of dis- 
cussing this matter with Dr. F’. Ris during an interview with him at Brussels. 
Although Sympetrum meridionale and S. fonscolombii are the only Odonata 
he has met with carrying Acari on the wings, he has found several imaginal 
Anisopterids—such as Cordulia enea, Libellula quadrimaculata, and species 
of Leucorrhinia—having Acari on the thorax and abdomen. Furthermore, 
he told me that a large proportion of the nymphs collected by him in Swit- 
zerland have been infested with Acarine parasites, and, in the cases of Sym- 
petrum sanguineum and Hnallagma cyathigerwm, he has actually witnessed 
the mites passing from the nymphal skin on to the skin of the imago while 
the emergence of the dragonfly has been taking place.—H. C. 
38, Maude Terrace, Walthamstow: Sept. 6th, 1909. 
SIX WEEKS AMONGST HUNGARIAN BUTTERFLIES.* 
By W. G. SHexpon, F.E.S. 
Wirn so much of Hastern Europe at present closed to the 
lepidopterist who values his safe return home, Hungary offers one 
of the chief centres for observing certain butterflies, the area of 
distribution of which does not extend so far west as the Alps; 
and for this reason most of us get there sooner or later. 
* Among other comparatively recent papers on Hungarian butterflies 
may be mentioned two published in this Journal :—“ A Fortnight’s Collecting 
at Budapest,” by W. E. Nicholson, F.E.S. (vol. xxv. pp. 191-198, 210-212) ; 
‘Two Seasons among the Butterflies of Hungary and Austria,” by Margaret 
kK. Fountaine, F.E.S. (vol. xxxi. pp. 281-89). 
