LAIDLAW—ODONATA. 89 
5. Zyxomma seychellarum, Martin. 
Localities. Seychelles: St. Anne,1¢. Chagos: Peros Banhos, 2¢. 
6. Zygonyw luctifera, Selys. 
Localities. Seychelles: Mahé, 10¢,4 2 (two of the males from a height of over 
1000 feet); Praslin, 16,19; St. Anne, 2¢. 
7. Diplacodes trivialis (Ramb.). 
Localities. Seychelles: Mahé, 23; Praslin, 22 (one of the specimens carries eggs, 
Nov. 5, 1905); Coetivy, 63,29. 
8. Orthetrum wrighti, Selys. 
Localities. Seychelles: Mahé, 18¢, 12 (plentiful at sea-level); Coetivy, 93, 22@; 
Praslin, 336, 22; St. Anne, 2¢. Chagos: Diego Garcia, 63, 9 (common); Percs 
Banhos (Ile Diamant), 12; Salomon Islands, 1¢. 
Aschnide. ASCHNIN®. 
9. Anax guttatus, Burm. 
Localities. Seychelles: Mahé, 2¢; St. Anne, 1?. 
Agrionidz. AGRIONIN#®. 
10, Allolestes maclachilani, Selys. 
Localities. Seychelles: Mahé, 1¢; Praslin,1¢,192. 
The male and female from Praslin are both badly damaged. The male agrees closely 
with that described by Martin, whilst the specimen from Mahé resembles AJlolestes 
nigra, Martin, in having more extensive black markings on the head and thorax. It is 
evidently an older specimen than that from Praslin, and the difference in age may to 
some extent be responsible for the difference in colour; or it is possible that the different 
islands may be inhabited by different races. I do not think the two forms sufficiently 
distinct to rank as species. 
ll. Hemicnemis bilineata, Selys. 
Localities. Seychelles: Mahé, 9¢, 52 (common, over 1000 ft., at Cascade) ; Praslin, 
io, 22. 
12. Agriocnemis extlis, Selys. 
Localities. Seychelles: Coetivy,5¢,72; Praslin,1¢. 
13. Ischnura senegalensis, Ramb. 
Localities. Chagos: Diego Garcia, 3. Seychelles: Mahé, 1. 
14. Ceriagrion glabrum. 
Localities. Seychelles: Mahé, 8; Praslin, 4; St. Anne, 1. 
SECOND SERIES.—ZOOLOGY, VOL. XII. 13 
