800 < i A STROPODA. [Pulmonatfi . 



Type in my collection. 



Hob. Snares, type (Captain Huttoti. Dr. Colquhoun) ; Campbell 

 Island (\V. K. Chambers). 



5. Athoracophorus Martensi, Suter, 1909. Plate 31, fijw. 8, 8</. 



Athoracophorus imh'ni<>nilii.x (v. Mts.), Simroth, Nova Acta, Leop. -Carol. 

 Deutsch. Akad. Natuif., liv, 1889, 71, pi. 4, f. 3-10. Janella marmorec, 

 Hutt. : Hedley and Suter, P.L.S. N.S.W. (2), vii, 662. Athoracophorus 

 marmoreus, Hutt. : Suter, J. de Conch., xli, 235. Jan,tlla marmoratu. 

 Simroth : Hedley, T.N.Z.I., xxv, 159 ; Plate, Zool. Jahrb., Anat., xi, 

 204, 205, pi. 9, f. 12; not A/!/r:r<i marmoreus, Hutton, 1879. 



phorus Martensi, Sutcr, i- 1 . Mai. X. viii. 1909. 324. 



Animal limaciform, with roundish cross-section, but the sole flat. 

 yellowish with black spots scattered over the back, head-shield extend- 

 ing to the mantle-area, which is subtriangular and open towards the 

 anus, situated some distance below the pulmonary orifice, but nearer 

 to the perinotum. Colour yellowish, with irregularly shaped black 

 spots scattered over the notum, but concentrated and sometimes 

 forming large patches around the mantle-area. In all the specimens 

 at my disposal, and preserved in alcohol, the two tentacles are retracted. 

 Head with 2 oval oral lobes, touching in the middle, with 2 frontal 

 urooves which form bifurcations of the side grooves of the head- 

 shield ; a triangular lobe in the centre above the two oval lobes. The 

 whole of the back is finely wrinkled, but some specimens are nearly 

 smooth. Median groove distinct from anterior part of mantle-area to 

 near the tail ; side grooves oblique, directed backwards, about 20 on 

 the left and 18 on the right side of the notum (13, testc Plate), of which 

 9 to 10 are post-pallial ; there are numbers of secondary grooves, 

 especially on the hyponotum. Head-shield elongated triangular, reach- 

 ing posteriorly to the renal orifice ; the median groove but faintly 

 indicated on the posterior part, and perhaps not visible on the living 

 animal. Mantle-field small, triangular, but narrowly open on the 

 right anterior side ; the front groove is running transversely down to 

 the anal orifice, forming the preanal groove, and the right posterior 

 groove is bent down anteriorly parallel to the preanal groove, forming 

 H post-anal groove. Renal orifice, very distinct, in the middle line 

 ;md anterior corner of the mantle-area. Anus below the respiratory 

 orifice, which is in the anterior part of the mantle-area, a little iieaivr 

 the perinotum than to the pulmonary opening. Genital orifice outside 

 t he right tentacle. Hy i>ontum rather indistinct ; the perinotum only 

 indicated by a low rounded ridge and a series of small black spots ; 

 the numerous transverse grooves are very prominent on the hypo- 

 notum. Sole of the same colour as the notum. aulacopod through 

 contraction in alcohol. Shell rudimentary, consisting of irregular 

 calcareous grains, the size being very variable; the largest are about 

 1 mm. ; they are laying in a large semicircle, beginning above the 

 anus and continued in front and on left side of the mantle-area, form- 

 ing a large patch behind and to the left of it. 



