252 PKOCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



A. papillafus. By way of addition to Simrotli's description it may be 

 mentioned tliat tlie colour of the back is yellowish-olive without spots ; 

 the sole being of a light-yellowish colour, and that fine granules cover 

 the whole of the back, while in each lateral area there are from one to 

 three larger papilla? of the same colour. The median dorsal groove 

 extends to the head. The mantle- area is darker, mostly triangular, 

 with the respiratory orifice nearly central. There is no area for the 

 renal orifice, which is situated in the anterior left angle. The size of 

 this species varies according to the locality. From the North Island 

 I have seen only small S2)ecimens, but on the South Island large 

 specimens occur. 



The dimensions of a large spirit specimen are : — 



1. Length over back from head to tip of tail, 60 mm. 



2. Length of sole, 55 mm. 



3. Width of back, 23 mm. 



4. Breadth of sole, 10 mm. 



5. Breadth of groove between sole and back, 4 mm. 



6. Distance of aous from right tentacle, 10 mm. 



7. Distance of anus from pulmonary orifice, 8 mm. 



8. Distance of pulmonary orifice from head, 15 mm. 



The reproductive organs (Figs. X, XI) agree with Dr. Simroth's 

 description and figure of A. verrucosus. I dissected five specimens, 

 and these organs were alike in all. The interior wall of the penis 

 is densely beset with conical papilla). 



Kql 



X. XI. 



AtJwracophorus papUlatus (Ilutton). 



X. Geuitalia : nat. size. XI. Anterior portion : magnified. 

 [For lettering, see ante, p. 250.] 



The digestive system is normal, the crop very large, without 

 diverticulum, the anterior loop of the intestine extending as far as the 

 oesophagus. 



Simroth concluded from the contents of the crop that these animals 

 fed on ferns.' In a short note - I expressed doiibts as to the correct- 

 ness of this suggestion. I have had specimens of Athoracophorus in 



' t.c., p. 80. * Jouru. de Couch., vol. xl, p. 255. 



