1918. 
A COLLECTION OF ODONATA FROM SOUTH ANNAM 459 
Teneral species of this insect so closely resemble servilia 
that this may possibly be a teneral form of that species. 
1918. 
Genus BRACHYTHEMIS. 
17. B.coNTAMINATA Brauer. 
Eight ¢ and four 2, taken in the same locality as the last. 
Genus ZYGONYX. 
18. Z.1R1s Selys. 
Three 3 and one Q. 
Genus TRITHEMIS, 
19. T.¥FEsTIVA Brauer. 
One 2 only. Dalat, 5000 ft., Langbian Province, April-May 
The altitude at which this insect was taken is greater than 
usual, it being essentially a plains species. From 3000-4000 ft. is 
its limit in Ceylon and India. 
1918. 
Genus HyDROBASILEUS. 
20. H. croceus Karsch. 
One 2 only. Daban 650 ft., Phanrang Province, March 1818. 
Genus THOLYMIS. 
21. T. TILLARGA Hagen. 
One ¢ only. From the same locality as the last. 
Genus RHYOTHEMIS. 
22. KR. PHYLLIS PHYLLIS Hagen. 
One ¢ and one 2. From same locality as last. 
23. KR. PLUTONIA Selys. 
One 3. Dran, 3000 ft., Langbian Province, March-May 
SuBorDER ZYGOPTERA. 
Family CALOPTERYGIDAE. 
Subfamily CALOPTERYGINAE. 
Genus NEUROBASIS. 
24. N.SINENSIS, Linn. 
Three d. Daban 650 ft., Phanrang Province, March 1918. 
VOL III, NO. 4, 1919, 
