SUTER : NEW ZK.VLAXD ATnORACOPHORTD^T;. 257 



specimen in my collection is 90 mm. long, foot 10 mm. broad, and was 

 found on a birch-tree near Collingwood. It is thus evident that this 

 species, in a genial, moist climate, attains to the largest size of all our 

 native slugs. 



Mai. — Auckland Islands (Krone); Collingwood, South Island. 



Conclusion. — The geographical distribution of the species is not 

 without interest. The North Island has only small, not much differen- 

 tiated forms — A. bitentaciilatus, A. antipodarum, and small foi^ms of 

 A. papillatus] whilst in the South Island, large, more differentiated, 

 and genc^rally darker-coloured species occur. Of the eight species all 

 are found on the South Island, but the larger forms prevail, especially 

 A. fapillatus. Two species occur as far south as the Auckland Islands. 

 We know nothing of any native slugs and very little about the other 

 land mollusca from Stewart Island. There is no reason y^hj Atlioraco- 

 phorus should not exist on this latter island, and it is even probable 

 that new species may be found on it some day. 



Like the unfortunately extinct Moa, Athoracnpliorus attains its 

 greatest development and differentiation on the South Island. The 

 comparison may seem somewhat peculiar, but it is (|uitc in accordance 

 W'ith the facts. 



The genus Atlioracophorm is restricted to jS'ew Zealand, including 

 the Chatham and Auckland Islands. The two other genera of the 

 family are found : Ancitea, Gray, in East to North Australia, New 

 Caledonia, and New Hebrides; '^ Aneitella, Cockerell, on AVild Island, 

 Admiralty Archipelago. The occurrence of members of the family in 

 New Guinea is to my knowledge not quite certain yet, but they seem 

 to be absent from the Kermadec, Norfolk, and Lord Howe Islands. 



Mr. C. Hcdley included Hyalimax, H. & A. Ad., in the family,^ but 

 according to Dr. Simroth this genus is much nearer the Succineidco and 

 has nothing whatever to do with the Athoracophoridce. 



' Traus. New Zealand lust., vol. xxv, p. IGl. 



VOL. II. — NOVEMBER, 1897. 18 



