440 PERCY SLADEN TRUST EXPEDITION 



Corduliinse. 



[12. Hemicordulia similis (Ramb.). 



Cordulia similis Ramb., Ins. Nevr., p, 147 (1842). 



Hemicordulia delicata Martin, Mem. Soc. Zool. France, ix. p. 105 (1896). 



Hemicordulia similis Martin, Coll. Selys, Cord., fasc. xvii. p. 14 (1906). 



Not represented in the collection. 



Hemicordulia includes several generalised members of the Subfamily, found in the 

 Oriental, Australasian, and Oceanic regions ; but, although it is represented in Madagascar 

 by two species, one of them being H. similis, it is not known to occur on the Continent of 

 Africa.] 



.ffischnidae. .ffischninse. 



13. Anax tristis Hag. 



Anax tristis Hag., Verb, zool.-bot. Ges. Wien, xvii. p. 35 (1867) ; Ris, Ann. Soc. Ent. 

 Belg., Iv. p. 320 (1911). 



Anax goliath Selys, Rev. Zool., xxiii. p. 178 (1872); Martin, Coll. Selys, Aesch., 

 fasc. xviii. p. 15 (1908). 



Loc. Aldabra : 1 ? , Basin Cabri, Picard Island (Fryer). 



This huge Dragonfly, to which Ris {loc. cit.) has lately restored the name tristis, is 

 widely spread over the Continent of Africa, and occurs also in Madagascar. 



14. Anax guttatus (Burm.). 



Aeschna guttata Burm., Handb. Ent., ii. p. 840, n. 14 (1839). 



Anax guttatus Martin, Coll. Selys, Aesch., fasc. xviii. p. 23 (1908). 



Loc. Seychelles. Mahe : 4 $ (Dupont). 



A species widely distributed in the Oriental Region, and occurring also in Queensland, 

 but not recorded from Continental Africa. 



15. Hemianax ephippiger (Burm.). 



Aeschna ephippigera Burm., Handb. Ent., ii. p. 840, n. 15 (1839). 

 Hemianax ephippiger Martin, Coll. Selys, Aesch., fasc. xviii. p. 28 (1908). 

 Loc. Seychelles. Mah^ : 1 ? , Cascade Estate. 

 Common both in Africa and Asia. 



16. Gynacantha stylata Martin. 



Gynacantha stylata Martin, Mem. Soc. Zool. France, ix. p. 106 (1896); Coll. Selys, 

 Aesch., fasc. xx. p. 181 (1909). 



Loc. Seychelles. Silhouette: 1?, Mont Pot-k-eau, about 1500 feet, VIII. 1908; 

 1 ?, Mare aux Cochons, IX. 1908. 



The specimen taken in August had evidently been ovipositing, for the ventral surface 

 of the terminal segments is coated with brown mud. 



