1886.] Insects collected in Tavoy and in Siam. 441 



161. Plesioneura nigricans. 



P. nigricans, de Niceville, Journ. A. S. B., vol. liv, pt. 2, p. 123, pi. ii, fig. 6, 

 fe^nale (1885). 



One female from Tavoy differing from the type specimen figured in 

 the discal hyaline band on the forewing being somewhat wider. 



162. Plesioneura leucocera. 



Hesperia leucocera, KoUar in Hiigel's Kaschmir, vol. iv, pt. 2, p. 454, n. 2, pi. 

 xviii, figs. 3, 4 (1848). 



Two female specimens from Tavoy and one from Ponsekai of this 

 wide-spread species. 



163. PiTHAURIA STRAMINEIPENNIS. 



p. stramineipennis, Wood-Mason and de Niceville, Journ. A. S. B., vol. Iv, pt. 2, 

 p. 388, n. 234, pi. xv, fig. 5, male (1887). 



One male from Ponsekai agrees with Sikkim specimens. 



164. Halpe beturia. 



Hesperia heturia, Hewitson, Desc. Hesperidce, p. 36, n. 31 (1868). 

 Three males from Tavoy which agree with Bengal examples. 



165. Antigonus sura. 



Achlyodes sura, Moore, Proc. Zool. Soc. Lend., 1865, p. 786. ■ '• 



Two examples from Tavoy and one from Ponsekai. 

 Isoteinon subtestaceus, Moore. 



166. Isoteinon indrasana, n. sp., PI. XX, Fig. 5, $ . 



$ Upperside, hoth wings brown with a ferruginous gloss. Fore^ 

 wing with a small round subapical dot, a similar spot but twice the 

 size at the lower outer end of the discoidal cell, a slightly larger trian- 

 gular one in the second median interspace, and a large quadrate one in 

 the first median interspace, all semitransparent yellow ; an elongated 

 spot touching the middle of the submedian nervure in the submedian 

 interspace opaque yellow. Cilia cinereous. Sindwing with an obscure 

 yellow patch on the middle of the disc. Cilia ochreous. Underside, 

 forewing with the costa broadly, and the apical half of the wing decreas- 

 ing to a point at the anal angle dark ochreous, the rest of the wing 

 fuscous ; the spots as above. Cilia fuscous, becoming ochreous towards 

 the anal angle. Hindwing dark ochreous thoughout, the veins a little 

 paler. Cilia ochreous. Antennce wanting. Head and body above dark 

 brown, beneath ochreous. 



Expanse : 9, 1"35 inches. 



A single example from Tavoy. We do not know any species to 

 which J. indrasana is nearly allied. 



*167. Isoteinon masoni, PI. XX, Fig. 4, ^ . 

 Pamphila masoni, Moore, Proc. Zool. Soc. Lond., 1878, p. 842, pi. Hi, fig, 5, male 



