SUTER : NEW ZEALAND ATnORACOrnOKID.E. 247 



Sect. I. ATHOKACOrilORUS, s.s. 



1. ATHORACornoKus BITENTACULATUS (Quoy & Gaimard). 



Limax hiteniacidatus, Quoy & Gaim. : Voy. Astrolabe, Zool. vol, ii 



(1832), p. 149; Atlas, Moll. pi. xiii, figs. 1-3. 

 Janella niaculata, Colliuge, Proc. Zool. Soc, 1894, p. 527. 



For all other references, see Journ. de Couch., vol xli (1893), p. 234. 



Among some specimens oi Athoracophorus, which I sent to Mr. Colliuge 

 as^. bitentaeulatus, he found two dilferiug from the rest in being much 

 flatter, of dirty yellow ground-colour and with numeroiis black spots 

 and dashes, and these he described as a new species, Janella maculata, 

 giving a good account and figures of its anatomy. There is, however, 

 not the least doubt but that the specimens 1 collected in the Forty 

 Mile Bush, and of which I sent some to Mr. Colliuge, consisted of 

 A. hitentaculatus and A. antipoilarum^ at that time considered to bo 

 one species. Colliuge, however, has shown that the two are quite 

 distinct, and herein lies the great merit of his investigation. It is 



Athoracuphorus bitentaeulatus (Quoy & Gaim.). 



I. Central tooth of radula. II. Sixth hxteral tooth of raduhi. 

 Both X 720. 



evident that the specimens referred by him to Janella maculata are in 

 fact Athoracopliorus hitentaculatus (Quoy & Gaim,). The authors 

 distinctly mention^ that their species has brown spots: "La couleur 

 de ce moUusquc est d'uu jaunatre sale tachete de brun clair." 



I have dissected a number of what I consider to be tyj^ical 

 A. hitentaculatus, and found them to agree with Colliuge' s new 

 species. 



The mantle -area is not defined, and is bordered, in front ouly, by 

 a lateral groove, which runs down to the anal orifice ; sometimes a fine 

 line is found outside the pulmonary orifice parallel to the median 

 dorsal groove, but there is no posterior limitation. In front of the 

 pulmonary orifice is a small triangular area of ligliter colour, with the 

 reual orifice, in the median dorsal groove ; this was taken for the anal 

 opening by Knight, and for a mucous pore by Ca])taiu Hutton. The 

 outflow and distribution of the renal secretion over the whole back of 

 the slug were well described by Knight.* 



' Voy. Astrolabe, Zool. vol. ii, p. 14S. 

 ''■ Traus. Linn. Soc., vol. xxii, p. 381. 



