308 GASTROPODA. [Pectinibranchia. 



Remarks. The shell found by Mr. Anderson is in fairly good 

 condition, though minus the protoconch. It is much smaller than 

 Australian specimens I have seen. Considering the wide distribution 

 of some species of Septa and Cymatium, and the smallness of this 

 species, I do not think it to be too hazardous to claim it for our fauna. 

 It may, of course, be an occasionally dropped shell, but the rather 

 good preservation of the specimen seems to tell against this, as also 

 its occurrence at the Kermadecs. 



3. Cymatium Spengleri, Chemnitz, 1795. Plate 43, fig. 3. 



Murex Spengleri, Chemn., Conch. Cab., xi, 1795, 117, pi. 141, f. 1839^0. 

 Triton Spengleri, Voy. Astrol., ii, 538, pi. 40, f. 1, 2 ; Conch. Icon., ii, 

 pi. 11, f. 36 ; Man. Conch. (1), iii, 16, pi. 9, f. 61 ; Chall. Rep., xv, 393. 

 Tritonium Barthelemyi, Bernard!, J. de Conch., vi, 54, pi. 1, f. 1. Triton 

 Waterhousei, Adams and Angas, P.Z.S., 1864, 35 ; Krister, Conch. 

 Cab., iii, 257, pi. 69, f. 1, 2. T. Strangei, Ad. & Ang., P.Z.S., 1878, 

 pi. 15, f. 16. Lotorium Spengleri, Chemn. : Pritchard and Gatliff, 

 P.R.S. Vic., x (n.s.), 263 ; Kesteven, P.L.S. N.S.W., 1901, 713, pi. 36, 

 f. 8, 9 ; I.e., 1902, 462, pi. 17, f. 19 (protoconch) ; Hedley, P.L.S. N.S.W., 

 1904, 193, pi. 8, f. 19 (eggs). 



Shell large, thick and ponderous, fusiform, spirally costate and 

 radially finely ribbed, with shouldered whorls, perforate. Sculpture 

 consisting of large sulcated spiral carinpe, which are distinctly and 

 regularly nodose, the whole ornament passing over the much ele- 

 vated, compressed varices ; large and small carinse alternating ; 

 shoulder with a few incised revolving lines ; the whole sculpture 

 crossed by numerous, subequidistant, broadly rounded axial riblets, 

 interrupted by the spiral narrow grooves. Colour yellowish-brown, 

 the incised revolving lines chestnut-brown ; aperture white. Epi- 

 dermis thin, horny, spirally regularly striate, with short bristles. 

 Spire elevated conical, about the same height as the aperture ; out- 

 lines almost straight. Protoconch of 4| horny, translucent, and very 

 finely reticulated whorls, slightly oblique to the vertical axis. Whorls 

 10 to 11, first slowly then more rapidly increasing, with an ob- 

 lique flat shoulder ; base flattish. Suture deep, undulating. Aperture 

 oblique, oval, with a distinct channel above, produced below into a 

 short, open, somewhat recurved canal. Outer lip much expanded, 

 rather sharp, very prominently denticulated by the spiral carinse, 

 deeply lirate inside, sometimes with a radial row of tubercles, the 

 elevated spirals with a broad median sulcus. Columdla vertical, 

 straight above, convex below. Inner lip spreading as a thin white 

 and polished callus a little beyond the columella, leaving the ele- 

 vations of the cinguli still visible, and reaching across the parietal 

 wall to the outer lip ; a small rounded tooth above ; towards the 

 base the lip is drawn out to a point on reaching the inner margin of 

 the canal, leaving a more or less open umbilical perforation. Oper- 

 culum concentrically lamellate, nucleus subapical. 



Diameter, 8 cm. ; height, 13 cm. : angle of spire, 40. Diameter, 

 5 cm. ; height, 9 cm. 



