Athoracophorus.] GASTROPODA. 795 



seminis. The sheath of the male organ is not long, oval, narrowed 

 distally. with the retractor muscle at the bend where the vas deferens 

 begins. The intrornittant organ has papillae inside, which will be on 

 the outside when the organ is everted. 



Type in my collection. 



Hob. North Island : Tuakau (type) ; vicinity of Auckland ; \\ai- 

 takerei Range ; Stratford. 



Very often found in the leaf-sheaths of nikau palms. 



Remarks. This subspecies was formerly included in A. bitentacu- 

 latus, and is the form mentioned by me in P. Mai. S., ii, 24, as being 

 semitransparent, and having an orange mantle-area. It is also dis- 

 tinguished from the species by the brown grooves, the rows of brown 

 spots close to the side grooves, the mantle-area limited in front and 

 behind by a groove and open on the side, and the presence of a preanal 

 groove. 



Subgen. 2. CONOPHORA, Hutton. 1879 (em.). 

 Konophora, Hutton, T.N.Z.I., xi, 332. Type : K. marmorea, Hutt. 



Slugs with the mantle-area open on the right side, the renal orifice 

 ia front of it, separated by a more or less distinct groove ; tentacles 

 short, conical. 



2. Athoracophorus marmoreus, Hutton, 1879. Plate 31, tig. 5. 



Konophora marmorea, Hutton, T.N.Z.I., xi, 1878 (1879), 332 ; M.N.Z.M., 27. 

 Janella marmorea, Hutt., T.N.Z.I., xiv, 158, pi. 5, f. 1, 2 ; xvi, 20f> : 

 Hedley and Suter, P.L.S. N.S.W. (2), vii, 662 : Plate, Zool. Jahrb., 

 Anat., xi, 273. Athoracophorus mamoreus, Hutt. : Suter, J. de Conch., 

 xli, 235 ; P. Mai. S., ii, 255 : viii, 324. 



Animal elongate, the back convex, nearly smooth or finely granular, 

 and sometimes with small and not much raised papillae, these characters 

 being largely dependent on the mode of preservation. I have not seen 

 a live example, and this diagnosis is based on alcoholic specimens. 

 The colour is very variable (1) the typical form is blackish, marbled 

 with pale brown on the back ; an indistinct black lateral line ; region 

 round the pulmonary opening yellowish : (2) blackish-grey, with 

 several roundish, distinctly granular patches in each side-field ; renal 

 orifice whitish ; perinotum black ; sole dark grey : (3) back yellowish- 

 brown with black spots along the median groove behind the mantle- 

 area, and 2 longitudinal rows of distant round black spots on each 

 side of the back, and a few whitish papillae and small granules in the 

 lateral areas ; all grooves whitish ; sole yellowish-white. Sometimes 

 small irregularly shaped black spots are present below the perinotum. 

 Eye-peduncles short and conical (teste Hutton). Mouth with 2 broad 

 oval lobes above, separated in the middle by a more or less distinct 

 triangular lobe. The median groove is very distinct, and continued on 

 the head-shield, a character not indicated in Hutton's drawing of the 



