90 Records of the Indian Museum. [Vol. XXII, 



Series Gynacantha. 



This series contains a large number of highh' organized tropi- 

 cal insects in both hemispheres which are crepuscular or at any 

 rate shade-loving. 



The dentigerous plate of the female is remarkabl}' specialized 

 and bears a remarkable similarity to that of Periaeschna. 



Gynacantha hyalinia, Selys. 



Aciinthagyna hyalinia. Kirby, Cat. Odonata, p. ^5. 

 Gynacnnfhn hyaliiiin. Kruger, Stettin Entomol. Zeit. i8g8, p. J75 seq 

 Marlin, Cat. Coll. Selv.s Aescltninae, pp. 198- 

 igg, fig. 2(13. 



I a- 5455/20. loc. ?, I 9 5454/20 Darrang, i & >3i3/4, 

 I 2 8306/4 Sibsagar. These specimens all in bad condition bear 

 labels in de Selys' handwriting. 



I & 1478/k 2. Chilka Lake (iV. ■!.), Zool. Surv. 



I 9 8287/20. Calcutta, ' flying at dusk." 



I 9 7939/11 I. Calcutta, ' flew to light inMu.seuni,' i4-viii-i7 

 {N.A.). 



I 9 8189/20. Cherrapunji. 



Gynacantha basiguttata, Selys. 



Acaiitliagvna hasiguffalii. Kirby, Cat. (JJonata, p. 95. 

 GvHiirauflin haiigiittata. Kruger, Stettin Entomol. Zeit. r8()8. pp. 283 — 

 284, tig. p. 279. 

 ,, ,, Martin, Cat. Cell. Selvs Aesch iiiiine. pp. 192 — 



,193- 

 Kis. Ann. Soc. Entomol. Belg. I.\'. pp. 24(1 — 

 -■47. %• 13 (U)ll), 



I 9 (in fragments) 5456/20. " Sibs." (Sibsagar, N. E. Assam) 

 (labelled by de Selys). 



I have examined 3 males of this species from Lower Siam. 

 It ranges from the Philippine Islands to Burma and Assam. Mar- 

 tin's figure is not that of the appendages of this species (see Ris, 

 loc. cit.). 



Gynacantha khasiaca, Maclachlan. 



Gvnacantha kliasiaca. Maclachian, Ann. Mag. Xat. Hist. id}. X\ll. 

 p. 411 (1896)- 

 l..iiclla\v, Rec. Ind. Mas \'III. p. 340 ( 1914). 

 .Martin, Cat. Coll. Selys Aesclininae. pp. 202 — • 

 203, fig. 207. 



I cf . Mangaldai, Assam. 6417/20. 



Gynacantha saltatrix, Martin. 



Gynacantha saltati-ix. Martin, Cat. Coll. Selys Acschninae, pp. 194 — • 



i9,s. %• igg- 

 I cf . Mazbat, Mangaldai District, Assam, 11 — i9-.\-io(S. IF. 

 Kemp), 6419/20. 



