Siphonaria (Kerguelenella) innominata (Iredale, 1915) Length 27mm, Width 19mm, Height 9mm, Marine, Endemic. Apex varying from between the posterior fourth and the posterior margin, or even beyond Subantarctic Islands. Auckland, Campbell and Antipodes Islands FAnE.
Siphonaria (Kerguelenella) lateralis (Gould, 1846) Length 16mm, Width 10mm, Height 5mm, Marine, Endemic. Apex within margin of lip Macquarie Islands. Also Straits of Magellan, Patagonia, Falklands, South Georgia AnE.
Siphonaria (Kerguelenella) stewartiana (Powell, 1939) Length 17mm, Width 12mm, Height 7mm, Marine, Endemic. Apex projecting beyond margin of lip Stewart Island, Snares, Bounty Islands. On shaded rock faces near high tide level FAnE.