S^f) PEOCEEDINnS OF THE MALACOLOGICAL SOCIETY. 



ILih. — South Island : Duncdiii ; Grcymoutli ; Pelorus Valley. 



This is one of our rare species. 



Cockerell's ^. marmoreus, forma nov.,from Dunedin,' is undoubtedly 

 A. papillatus \av. fasciata. " Depressed raised tubercles" arc not met 

 Avith in Konoj)hora. 



Subp;cn. AMPniKos^ornoEA, n. subg. 



Large slugs with well-marked dorsal grooves. Mantle-area distinct, 

 triangidar, with the renal opening inside its anterior angle and the 

 pidmonary orifice subcentral, nearer the right side. Anns close to the 

 Older angle of mantle- area. The whole back finely granulate. 



This is no doubt the most interesting group of Athoracophorus. It 

 is unique in the situation of the anus close to the mantle-area, 

 approaching thus the genus Aneitea, from which, however, it is 

 distinct, especially in the absence of a diverticulum on the crop, the 

 presence of a renal duct, the form of the teeth of the radula, etc. 



8. ATHOKACornoRus maemoeatus, Simroth. 



Athoracophorus marmoratus (Mts. MS.), Simroth: Nova Acta Acad. 

 Cfes. heop. Carol., Bd. liv(1889), p. 71, pi. iv, figs. 3-10. 

 A. marmoreus, Suter, non Hutton. 



It is not very long since I obtained a specimen of this rare shig, 

 Avhicli agrees perfectly with the description and figures published by 

 Dr. Simroth. In Fig. XVIII the situation of the anus close to the 



XVIII. 



AthoracopJiorus marmoratus, Simroth. 



XVIII. Portion of back with mantle-area : enlarged. 



1. Mantle-area. 3. Renal orifice. 



'2. Pulmonary orifice. 4. Anus. 



mantle-area, so characteristic of the species, is illustrated. Dr. Simroth's 

 specimen was a very small one, 20 mm., but it may well be that these 

 slugs do not attain a much larger size on the Auckland Islands. The 



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



