NO. 1389. DRAGONFLIES OF BURMA AND SIAM— WILLIAMSON. 187 



le.ss this is a mistake, 'IT Ihmiio- intended. A male and female from 

 Siam measure as follows: Abdomen, mal(> 54 mm., female 4(>; hind 

 wing, niale 39 mm., female 41. Wings of both sexes have the violet 

 and green reflections almost universal in this su))family. 



20. NEUROBASIS CHINENSIS (Linnaeus). 



Material studied: liurma, collection V. A. N. 8., 2 mah^s; collection 

 Williamson, 3 males. Siam, collection U. S. N. M., Trong, Low^er 

 Siam, 6 males, 3 females; Khow Sai Dow Mountain, 1,000 feet, Trong, 

 Lower Siam, January- Fel)ruarv, ISIM), 1 male. 



Fig. 18.— Wings of male neukobasis chinensis fkom Siam. 



De Setys in Odonate,^ d<' Birmdu!) records cliui( nk/s from '^Monts 

 Carin en avril; Puepoli en juin; Bhamo en juillet (Fea).*' Mr. Kirby 

 has recorded the species for I'pper Burma and Hassan Al)dal. Mr. 

 Laidlaw took the species on the Aring River, in Kelantan; and De Selj^s 

 in 1897 (Causeries Od.) gives as ^'Patrie: Inde, Thibet, Khazya Hills, 

 Cochinchine, Sumatra, lie du Prince-de-Galles.'' 



21. MATRONA NIGRIPECTUS De Selys. 



This species is not represented in the material before me. De Selys 

 has recorded it from the Khasia Hills, Puepoli (June) and Leito (Sep- 

 tember). 



SUMMARY. 



Twelve genera and twenty -one species of the subfamily Caloptery- 

 ginee are known from Burma and Lower Siam. In the preparation 

 of this paper a total of 233 specimens have been studied. 



