22 F. F. LAIDLAW. 
The two specimens, which are from Hulule, Male Atoll, both belong to var. A, which 
is peculiar to Ceylon and S. India. The species ranges as far as Timor and Celebes. 
8. Hydrus platurus (Linne). 
Hydrus platurus, Boulenger, Cat. Snakes, ui. p. 267 (1896). 
A single specimen belonging to var. H. The species inhabits the tropical waters of 
the Indian and Pacific Oceans. 
Order CHELONIA. 
Fam. Testudinidae. 
9. Nicoria trijuga, var. thermalis (Lesson). 
Nicoria trijuga, var. thermalis, Boulenger, Cat. Chel. p. 122 (1889). 
Seven specimens from Hulule, Male Atoll. The largest measured 118 mm. and_ the 
smallest 68 mm. along the carapace. This variety of the species has been introduced into 
Diego Garcia, Chagos Archipelago, but is otherwise peculiar to Ceylon. 
Fam. Chelonidae. 
10. Chelone nmydas (Linne). 
Chelone mydas, Boulenger, Cat. Chel. p. 180 (1889). 
11. Chelone imbricata (Linne). 
Chelone imbricata, Boulenger, Cat. Chel. p. 183 (1889). 
Both this and the last species are of universal distribution in tropical and sub-tropical 
seas, and are exceedingly numerous in the Maldives and Laccadives. 
