SOME UNDESCRIBED RHOPALOCERA FROM SIAM- 189 



Length of outer margin (apex to extremity of vein 1), d, 

 22 mm; 9, 21.5 mm. 



B. M. Type No. Rh. 133, d, 28.4.14; 134,9, 20.4.14, Hup 

 Bon, "S. E. Siam. t 



This species together with 0. plianeus Hewitson, (wrongly 

 identified by Watson when setting up the genus ) and 0. omeia 

 Leech, form a subsection of the genus Orthophaetus Watson, in which 

 the males have no costal fold. The female bears a superficial re- 

 semblance to the females of Casyapa corvus Felder and Capila 

 zennara Mo5re, and had in fact been previously resorded (I. c.) from 

 Siam as the latter. We name the species after Mr. P. A. R. Barron, 

 of the Borneo Company, near whose bungalow in the Sriracha forest 

 it was obtained. 



23. Hasora proxissima Elwes & Edwards. 

 (Plate VI, fig. 9.) 



A short series of four males and one female of a species of 

 Hasora taken at Nong Yai Boo, near Sriracha, S. E. Siam, in April 

 1914 seem inseparable from the above species described from the 

 Philippines (Mindoro). We rely on the figure and description for this 

 identification as we have not seen an authentic specimen to compare 

 ours with. 



Three of the males differ in having a faint pale spot on the 

 underside of forewing in area 2 close against vein 3, a short distance 

 from its origin. In all other respects they all agree exactly with the 

 figure. 



The female, which does not seem to have been described so 

 far, differs from the male, apart from the normal sexual differences 

 in the shape of the wings, &c, only in having ochreous more or less 

 translucent marks in areas 2 and 3 of forewing. The lower of these 

 corresponds in position to the pale mark referred to in the male and 

 is crescentic, anteriorly truncate ; the upper one is similar in shape, 

 placed considerably beyond the other, the horns of the crescent cut 

 oft* by the veins (3 and 4). The underside, apart from these markings, 

 which are the same below, exactly resembles the male. 



Length of forewing. — 9, 24 mm. 



VOL. IV, NO. 3, 1921. 



