806 GASTROPODA. [Pulmona.ta. 



central part smooth ; in front the sole is separated from the head by 

 a deep groove. Shell rudimentary, consisting of very numerous and 

 small calcareous grains, no larger ones amongst them. 



Measurements of type specimen : Length over back from head to 

 tip of tail, 92 mm. Width of back to perinotum, 32 mm. Sole- 

 Length, 71 mm. ; breadth, 19 mm. Breadth of hyponotum, 4 mm. 

 Distance of anus from right tentacle, 16 mm. Distance of anus from 

 pulmonary orifice, 5 mm. Distance of pulmonary orifice from head, 

 22 mm. This slug, when alive and crawling, had a length of 130 mm. 



Jaw (fig. 12) elasmognathic, with a sharp median projection. 



Radula (fig. 126) large, with numerous teeth. Central tooth with 

 3 cusps, the median small, with 1 cutting-point ; the lateral ones 

 triangular with 2 or 3 denticles on each. Lateral teeth with 4 denticles, 

 the inner one largest. 



Generative Organs (fig. 12c). The hermaphrodite gland is not large, 

 globular ; the albumen-gland is yellowish, tongue-shaped, compact ; the 

 prostate is composed of globular and oval dark-grey convolutions ; 

 oviduct long, yellow, the vas deferens adhering to it ; there are no 

 accessory glands. The proximal receptaculum seminis is large, oval, 

 with a short neck. Vagina very short. Sheath of male organ long, 

 thick, tapering very gradually to the posterior end, where the vas 

 deferens enters and the retractor muscle is affixed ; the intromittant 

 organ with numerous small pointed papillae. 



Type in my collection. 



Hob. South Island : Collingwood, in a birch - tree ; Chausille 

 Ridge. South Westland, at an elevation of 5,500 ft., one specimen 

 (Rev. H. E. Newton). 



Remarks. The stomach of the specimen I dissected contained a 

 large amount of greyish-black wood-fibres. This is the largest species 

 of Athoracophorus known. 



10. Athoracophorus verrucosus (v. Mts.), Simroth, 1889. Plate 31, 

 fig. 13. 



Athoracophorus verrucosus (v. Mts.), Simroth, Nova. Acta Leop. -Carol. 

 Deutsch. Akad. Naturf., liv, 1889, 77, pi. 4, f. 11-14 : Cockerell, P.Z.S., 

 1891, 217 : Suter, J. de Conch., xli, 235 : P. Mai. S., ii, 251 ; viii, 328. 

 Jandla verrucosa, v. Mts. : Hedley, T.N.Z.I., xxv, 158 ; Hedley and 

 Suter, P.L.S. N.S.W. (2), vii, 6G1 ; Plate, Zool. Jahrb., Anat., xi, 201, 

 pi. 9, f. 10, 11. 



Var. nigricans (v. Mts.), Simroth, I.e., 11. 



Animal rather small, elongate, with rounded head and sharply 

 pointed tail, black, covered with small papillae, head-shield with 

 median groove, mantle-area triangular, anus inside its outer angle. 

 Colour : The whole of the notum is uniformly black, the hyponotum 

 is yellowish and densely besprinkled with black dots, sole and mouth 

 yellowish -white. In the spirit specimens before me the 2 tentacles are 

 retracted. Mouth with 2 roundly oval upper lobes, separated by a 



