Se cer Fm 

only a single species :—Mnais andersoni MacLach., and Mac- 

fie 
ZOOLOGICAL RESULTS OF THE PERCY SLADEN 
TRUST EXPEDITION TO YUNNAN UNDER THE 
LEADERSHIP OF PROFESSOR J. W. GREGORY, 
F.R.S. (1922). 
ODONATA. 
By F. C. Fraser, Masor, I.M.S. 
The collection contains nearly 200 specimens of which I 
have been able to examine about 170. 
For want of a better medium, the insects were preserved 
in some kind of raw native spirit which | fear did not contain 
any great percentage of alcohol, as most of the specimens have 
uffered more or less from maceration. By a happy chance 
however, the rarest and most valuable specimens have suffered 
the least damage. 
As is usually the case where collections of dragonflies are 
made by those not specializing in them, the majority of the 
specimens turn out to be Libellulines. This is only natural in 
a dominant sub-family like the Libellulinae as the more showy 
Species are apt to force their attentions more pertinently on 
the collector's attention to the exclusion of less showy and 
rarer forms. 
Very little is known of the dragonflies of Yunnan and exist- 
ing records are very meagre. Kirby's Catalogue (1890) gives 
fmm 
ct 
Lachlan’s list published later (1894) gives only 14 more. 
will be useful to recapitulate these and to give a combined list 
with those collected by Professor Gregory. 
The species involved are almost entirely and purely 
oriental in distribution, only some half dozen being entogenic 
in the palaearctic region. The paucity of the latter comes as 
a surprise until one notes that the temperatures recorded were 
comparatively high (78° to 85° F., at altitudes of 6,000 to 
7,000 feet). 
In the following list species taken by Professor Gregory 
are printed in italics :— 
1. Agrionopterasp.MacLach. 5. Othetrum triangulare me- 
2. Libellula basilinea. Mac- lania Selys 
Lach. 6. Sympetrum  eroticum 
3. Orthetrum japonicum in- ardens (MacLac 
ternum Uhl. 7. Sympetrum scoticum Don 
4. Orthetrum cancellatum 8. Crocothemis servilia Dru 
9. Palpopleura  sexmaculata 
Fabr. 
Linn. race kraepelini. 
Ris. 
