804 GASTROPODA. [Pulmonata. 



Remarks. When writing the above diagnosis I had not seen any 

 specimens of this species, but in September, 1909, Mr. T. H. Turner, 

 principal keeper, Stephen Island, at my request most kindly sent me 

 a number of living specimens of this slug, and I am now able to supply 

 bhe following additional information : 



The living animal has a lanceolate, depressed convex body when 

 at rest, and a full-grown specimen showed the following dimensions : 

 Length, 37 mm. ; breadth, 15 mm. ; height, 6 mm. When crawling 

 the animal was not much higher, but much more narrowed and 

 longitudinally extended, the length being 55 mm. ; breadth, 10 mm. 

 Colour yellowish-brown with the minute granules of the notum black ; 

 the large papillae, which usually only appear through contraction when 

 preserved in alcohol, are marked by whitish spots surrounded by 

 black ; mantle-area yellowish margined with black ; tentacles greyish. 

 The tentacles are rather short, slightly clavate, with an annular swelling 

 at the base, 3-4 mm. long when fully extended. Notum minutely and 

 densely granular all over. The large papillee are sometimes sharply 

 raised, but after a short period their turgescence disappears, and the 

 whole dorsum is left only minutely granular. The grooves are distinct 

 and the median furrow of the head-shield is always distinct. The 

 specimens at the disposal of Plate had no median groove on the head- 

 shield, no doubt as a result of the mode of preservation. All the 

 living specimens I examined had a very distinct median groove on 

 the head-shield. The eggs are laid in clusters of 20 to 30 ; they are 

 yellowish-white, semitransparent, globular or slightly oval, the surface 

 distinctly puckery ; diameter, 3 mm. 



8. Athoracophorus Simrothi, Suter, 1896. Plate 31, fig. 11. 



Athoracophorus Simrothi, Suter, P. Mai. S., ii, 1896. 34, pi. 4, f. 3, 4 ; I.e., 253 : 

 viii, 325. Janella Simrothi, Suter : Plate, Zool. Jahrb., Anat., xi, 273. 



Animal (in alcohol) elongate, about five times longer than broad ; 

 head broadly rounded, tail tapering ; back rounded, presenting a 

 botryoidal appearance owing to the numerous strongly developed 

 papilloe. Colour uniformly fulvous, the papillae of lighter colour. 

 Head with 2 tentacles, retracted, and 2 oral lobes, separated by a rather 

 broad ridge in the middle. Notum with a deep median groove ; lateral 

 grooves about 15 on each side, much impressed, some of them bifurcating 

 toward the margin ; 8 to 9 grooves are post-pallial. Each lateral area 

 contains 3 to 4 large oval papillae, separated by fairly deep interstices ; 

 they are round and less numerous in front of the mantle-area. Head- 

 shield triangular, with a median groove. Mantle-area triangular, long 

 and narrow, with the respiratory orifice in the middle at about the 

 anterior third ; renal opening in front upon the median groove ; anus 

 below it, near the perinotum ; genital orifice close to the outer side of 

 the right tentacle. Hyponotum fairly distinct, grooved. Sole smooth. 



Measurements : Length, 30 mm. ; breadth, 8 mm. ; height, 5 mm. 

 Papillae on the central part of the notum, 1 mm. by 1 J mm., and 

 f-1 mm. high. 



