was never seen again despite extensive efforts to locate it. This species is considered to be extinct. Description The northern gastric-brooding frog was a much larger species than the southern gastric-brooding frog. Males reached in length, and females in length. This species was also much darker in colour, usually pale brown, and like the southern gastric-brooding frogs its skin was bumpy and had a slimy mucus coating. There were vivid yellow blotches on the abdomen and the underside of the arms and legs. The rest of the belly was white or grey in colour. The tympanum was hidden and the iris was dark brown. The body shape of the northern gastric-brooding frog was very similar to the southern species. Ecology and behaviour The northern gastric-brooding frog was only recorded in pristine rainforests where the only form of human disturbance was poorly defined walking tracks. As with the southern gastric-brooding frog, the northern gastric-brooding frog was also a largely aquatic species. They were found in and around the shallow sections of fast flowing creeks and streams where individuals were located in shallow, rocky, broken-water areas, in cascades, riffles and trickles. The water in these streams was cool and clear, and the frogs hid away beneath or between boulders in the current or in backwaters. Male northern gastric-brooding frogs called from the water's edge during summer. The call was loud, consisting of several staccato notes. It was similar to the southern gastric-brooding frog's call although deeper, shorter and repeated less often. The northern gastric-brooding frog was observed feeding on caddisfly larvae and terrestrial and aquatic beetles as well as the Eungella torrent frog (Taudactylus eungellensis). Reproduction What makes these frogs unique among all frog species is their form of parental care. Following external fertilization by the male, the female would take the eggs or embryos into her mouth and swallow them. It is not clear whether the eggs were laid on the land or in the water, as it was never observed before their extinction. Interestingly, Darwin's frog, another species of frog, has been observed to exhibit similar mouth-brooding characteristics. This feature still remains extremely rare in nature. Eggs found in females measured up to 5.1 mm in diameter and had large yolk supplies. These large supplies are common among species that live entirely off yolk during their development. Most female frogs had around 40 ripe eggs, almost double that of the