SUTER : NEW ZEALAND ATnOKACOPnOEIDJE. 251 



The reproductive organs are disting'uislied from those of the two 

 foregoing species as follows: — The penis (Fig. Ill) is about as long as 

 in A. hitentaculata ; its anterior portion is rather wide, but at about the 

 middle it suddenly contracts, the slender second half being convolute 

 with the retractor muscle. The size of the hermaphrodite gland, 

 which is about twice that of those in the other two species, is especially 

 noteworthy. The interior wall of the penis is covered with thorn - 

 shaped papilla; (Figs. IV, V), very much like those desciibed and figured 

 by Bergh fi'om Tnhoniophorus Schuettei} I found similar papilla? 

 present in the penis of At/to racophonis litentaculatus. 



Badiila. — The rhachidian tooth (Fig. VI) is unsymmetrical, pointed 

 in front, with six, sometimes seven, cusps, of which the median is the 

 largest. The lateral teeth (Fig. VII) have eight cusps, the inner one 

 being the largest. There is a considerable difference between the 

 dentition of this species and that of A. hitentacidatus, the figures of 

 two teeth (Figs. I, II) being given hero for comparison. The jaw 

 (Fig. VIII) is much the same as in the two species already enumerated, 

 and there seems to be no chance of relying on it as a means for distin- 

 guishing the species, as often may be done in Succinea. 



The digestive system (Fig. IX) does not differ much from that of the 

 two other species. The crop is wide and long, extending to the liver, 

 with no trace of a diverticulum ; the stomach lies between the folds of 

 the liver and the intestine, and forms a long anterior loop, returning 

 to the liver, whence the rectum emerges. 



Hah. — Pelorus Valley, Marlborough, South Island. 



Sect. II. PSEUDANEiTEA, Cockerell. 

 Cockerell, Proc. Zool. Soc, 1891, p. 217. 



" Small slugs of Hew Zealand and the Auckland Is., resembling 

 Athoracuphorus, but showing a decided tendency towards the formation 

 of a mantle-area like that of Aneitea. The Jandla papillata of 

 Hutton may be taken as the type." — Cockerell. 



These slugs are not always small. Back usually finely granulate 

 with larger raised tubercles or papillae between the oblique grooves. 

 Mantle -area distinct, triangular or quandrangular, enclosing the 

 respiratory orifice. Anus below the latter and near the foot margin. 



4. ATHOKACOPnORUS PAPILLATUS (Huttou). 



Janella pajaillata, Hutton: Trans. New Zealand Inst., vol. xi (1879), 



p. 332. 

 Athoracophorus verrucosus, Mts. : Simroth, Nova Acta Acad. Cses. 

 Leop. Carol., Bd. liv, p. 77, pi. iv, figs. 11-14. 

 For further references see Journ. de Conch., vol. xli, p. 235, 



After carefully comparing Dr. Simroth' s description and figures 

 with my specimens, I am convinced that A. verrucosus is identical with 



1 Verband. k. k. zool. bot. Ges. "Wieu, Bd. xx (1870), p. 853, pi. xiii, tit 



