321 



THE NEW ZEALAND ATHORACOPHORIDiE, WITH DESCRIPTIONS 



OF TWO NEW FORMS. 



By HENUr SUTEK. 



Read \Uh April, 1909. 



Since publishing a revision of this family ' much more material has 



come to hand. Of great interest are the slugs collected by the late 



Captain Button, and recently by Professor W. B. Benham, F.R.S., 



during the scientific expedition to our sub-antarctic islands. I am 



thus enabled to correct a number of mistakes made in my revision, 



assisted also by the paper published by L. H. Plate ^ in 1898, 



"Beitrage zur Anatomie und Systematik der Janelliden." All the 



different forms, except A. Schauinslandi, are now in my collection. 



To show the peculiarities of head-shield, mantle-area, position of 

 the grooves, respiratory, renal, and anal orifices, the eleven diagrams 

 which here follow have been drawn. 



Genus ATHORACOPHORUS, Gould, 1852. 

 Janella, Gray, 1850 ; ??ow Grateloup, 1838. NeojaneUa, Cockerell, 1891. 



Subgen. 1. Athoeacophokus, s.str. 

 Mantle-area not bounded on all sides by grooves ; tentacles long, 

 cylindrical ; renal orifice inside the mantle-area. 



1 These Proceedings, 1897, vol. ii, p. 245. 

 * Zool. Jahrb. (Auat.), vol. xi, pp. 193-280. 



