AKT. 10. LiRAGOXFLTES OF GEXUS ACIAGRION — LAIDLAW. 5 



a.^ Species wliich are not known to me— Continued. 



J).- A. fra gills Tillyard. 



Postocular markings blue. Narrow antehumeral stripes and 

 sides of synthorax blue, legs gray. Abdomen of male with 

 segments 1 to 8 black, with narrow, transverse, white lines 

 along the sutures. Segment 2 marked with blue at the sides 

 as is 7. Segment 9 bright blue, 10 black above, blue at the 

 sides. Female as in the male, but segment 8 has the sides, base 

 and apex blue, 9 has a bronze basal .=ipot, and 10 is blue. Post- 

 nodal nerves in forewing 9. Length of abdomen of ma.le 22 to 

 28 mm. ; hindwing 14 mm. 



6.^ A. azureura Fraser. 



Rather large species (abdomen of male 30 mm.; hind wing 

 20 ram.). Markings on head pale yellow, but with large blue 

 postocular spots. Few blue antehumeral stripes on synthorax, 

 sides blue, changing to creamy yellow below. Abdomen with 

 ground color of segments 1 to 2 and S to 10 blue; black mark- 

 ings on the dorsum of 1 to 7 ; the last three segments un- 

 mai-ked. Anal appendages similar to those of A. olympicum, the 

 npper pair more conical and not bifid, black in color. Post- 

 nodal nerves on forowing 10 to 31. Said to be very like A. 

 ohjwpicviii. 



ACIAGRION HISOPA de Seljs. 



Plate 1. tig. 8. 



Aciatjrion liiaoyn de Selys. Ann. Miis. Civico di Genova, vol. 30, p. 159 (pp. 



80-81, separate!. 



Specimens examined. — Four males and three females from Piilaii 

 Ubi, a small island near Singapore, and the Botanic Gardens at 

 Singapore. One female from Biserat in Jalor (Siamese Malay 

 State), N. Annandale. Two male?: and two females from Burma, col- 

 lection E. B. Williamson, collected by R. A. Earnshaw\ 



None of these spicemens is in good condition, and it is not pos- 

 sible to make a satisfactoiy figure of the anal appendages of the male. 



I have, however, no doubt as to the correctness of my identification. 

 The accompanying plate figure illustrates the structure of the ter- 

 minal parts of the penis; it is drawn from a specimen from Singa- 

 pore. 



The type specimen is said to have come from Pulo Besoar in Malaya 

 and the species ranges from the Malay Peninsula and Lower Siam 

 through Burma and Assam to peninsular India, as far south us the 

 Nilgiri Hill.-, at any rate. Fraser * has recorded a race hrishna from 

 MahableshAvar in wliich the male has occasionallj'^ a small black spot 

 on either side of the eighth segment of the abdomen, and sometimes 

 a black dorsal mark on the tenth, and the female has segments 9 and 



* Jouni. Boiiibay Nfit. Hist. Soc, 1921, p. 542. 



I004f;i— :.'4 2 



