9 
219.1 gins., heavy fat; cf testis 6 x 2 mm., 184 gms., light fat; 9 ovum 2 mm., 
176 gms., medium fat. 
Small numbers of this species roosted on Fakaofo and Nukunono Atolls. 
These populations were estimated at 200+- for each island. There is some 
indication from the specimens' gonads that the species probably nested on 
the two atolls although no conclusive data were obtained. Munro (op. cit.) 
states they were breeding on the Tokelau Islands in 1938 . On Atafu Atoll 
there was a very large population, estimated to be around 3/000 birds. 
These birds gave evidence of breeding also. On Atafu, large flocks were 
roosting on the edges of the reef on the leeward shore. It is presumed 
that these birds were nesting in the same area as other Pacific Islands, 
namely in the palm trees. . 
Procelsterna cerulea . Blue-gray Noddy. 
This species was not observed by us on the islands but is reported by 
Ramsay (op. cit.) 
Sterna sumatrana . Black-naped Tern. 
Specimens—13. Fakaofo: cf testis 4x4 mm., 101 gms., little fat; 9 largest 
ovum 2 mm., 99 gms., little fat; 9 ovary granular, little fat, 98 gms., 
Nukunono: cf testis 4x3 mm. 103 gms., medium fat; cf testis 6x4 mm., 
96 gms., sex? immature, 96 gms., 9 largest ovum 1 mm., 92 gms., Atafu: 9 
largest ovum 4 mm., oviduct enlarged, 95.5 gms.; sex? immature, 109.4 gms., 
heavy fat; cf testis 7 x 5 mm., 112.3 gms., medium fat; cf testis 8 x 6 mm., 
99.7 gms., medium fat; 9 ovary granular, 110.4 gms., medium fat; cf testis 
6 x 7 mm., 97.8 gms., light fat; cf testis small, 112.4 gms., heavy fat; 9 
immature, 106.2 gms., heavy fat. 
Common species in the Tokelau Islands. Indications from gonads and flying 
young were that the breeding season had just ended. This species had been 
reported previously from the Tokelau Islands by Mayr (op. cit.). 
