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Il. Notes on Odonata, of the subfamilies Corduliina, 
Calopterygina, and Agrionina (Légion Pseudostigma), 
collected by Mr. Bucktry, im the district of the Tio 
Bobonaza, in Ecuador. By R. M‘Uacutay, F'.B.S., &e. 
[Read February 2nd, 1881.] 
In 1878 this Society did me the honour to publish 
(Trans. Ent. Soc. Lond., 1878, pp. 85—94) a short 
paper on Odonata, of the subfamily Calopterygina, 
collected by Mr. Clarence Buckley, chiefly at Intaj (or 
Intac) in Northern Ecuador. Upon his return to 
England last year, I obtained from him a considerable 
collection of Odonata, many of them most interesting 
and certainly new. These came from the district of the 
Rio Bobonaza, a tributary of the Rio Pastaza, and 
situated in the forest region east of the Andes. The 
effect of differing local conditions is most markedly 
shown in this latter collection, for in the Calopterygina 
(and also in other subfamilies) scarcely any of the 
species forwarded in the former small collection are 
represented in the present larger one. 
It is at present not possible for me to give an analysis 
of the whole of the collection, and I have restricted the 
subject of this paper to the groups mentioned in the 
heading. 
It will be noticed that a not inconsiderable number 
(considering the amount of materials) of new forms are 
described, and some of them are of great beauty. With 
regard to some of the Calopterygina a well-known, and 
ever-increasing, difficulty asserts itself, viz., that of 
deciding what should constitute a species, and what a 
‘‘race”’ or variety. The insects of this subfamily prove 
themselves especially plastic, so far as local modifications 
are concerned, and it is highly probable that each 
elevated valley of the mountainous regions of tropical 
America may possess its own peculiar form of one root- 
species, if I may be allowed the term, just as has been 
already noticed in butterflies, although the aquatic 
_ habits of dragonflies in their preparatory stages do not 
so greatly isolate them. The beautiful genus Thore, is 
TRANS. ENT. soc. 1881.—PaRT I. (APRIL.) E 
