164 MAJOR F. C. FRASER ON 



9. Neurothemis intermedia intermedia Ramb. 



8 males and 4 females from Ban Manao, Ban Nua, Ban Na An 



and Ban Na Sao. 



LO. Crocothemis servilia servilia Druiy. 



1 male from Na Kram and another from Ban Siew. 



11. Trithemis aurora aurora Burm. 



Several of both sexes from Utaradit, Nong Nam Pi, Na Kram 



and Pak Tah. 



12. Trithemis festiva Ramb. 



1 male from Na Kram. 



13. Brachythemis contaminata Fabr. 



2 males from Na Kram. 



14. Tholymis tillarga Fabr. 

 Several of both sexes from Na Kram and 1 male from Nong 

 Nam Pi. 



15. Neurobasis chinensis Linn. 

 4 males and 2 females from Na Kram. 



16. Vestalis gracilis Ramb. 

 Several males and females from Ban Manao, and Ban Na Sao. 

 These do not bear any trace of a dark, apical fascia as in apicalis, 

 but I am inclined to consider the former as a teneral variety of the 

 latter. 



17. PSEUDOPHAEA MASONI Selys. 



1 male from Na Kram and 2 males from Pak Tah. These 



do not differ from type. The female of this species is apparently 



rarely seen, which accords with my experience of other members of 



the genus. 



18. MlCROMERUS LINEATUS Burm. 



The markings on the first 6 abdominal segments vary widely 



but I regard this as merely an evdence of age, as some compare 



closely with specimens from Ceylon, whilst others are exactly similar 



to specimens from Dehra Dun, N. India. The specimens, males 



and 1 female were all taken at Pak Tah. All the males have a well 



developed, apical, black marking. 



19. COPERA, MARGINIPES. 



1 male from Nong Nam Pi and a female from Na Kram. 



JOURN. NAT. HIST. SOC. SIAM. 



