OF NEW SOUTH WALES. 236 



This fossil is smaller than Triton reticulatum, Blain., of the 

 Vienna basin, which is also a Pisania, though we have a living 

 P. reticulatum, Adams, in our seas. The Muddy Creek fossil is 

 much smuller or more ovate ; is shining and decollated in all the 

 specimens I have seen. The ornamentation is very elegant, 

 arising from very close fine ribs (there being thirty-five in the 

 last whorl), over which numerous close flat lines pass so as to 

 completely cover them with granules. There is only one varix 

 on the last whorl, which is at the lip ; there are two on the next 

 and four on the next. On the fifth whorl of the spire, the ribs 

 are scarcely granular, and the varices on one side of the spire 

 follow one another nearly continuously. The aperture is rather 

 long and the canal short and scarcely recurved. The columella 

 lip is smooth, inconspicuous, and well defined. 



Fusus FUNicuLATDS. Plate 20, fig. 1. 



Testa parva, elongato-fusiformi, solida, parum nitente, spira quam 

 apertura longiori, avfr. (nucleo incluso) 6, parum convexis et 

 declivlbus, carinis spiralibus 5 vel 6, latis, rotundatis, solidis cinctiSf 

 lineis quoque longit. inconspicuis, supra carinas non transeuntibus, 

 sutura lata, haud impressa ; nucleo Icevi, polito, 2 a7ifr., apertura 

 ovata, labro varice incrassato,intus lirato, labio rejiexo, ienuif canali 

 hrevi, recurvo. Long 8|, lat. ^\ ; long, spire h\. 



The fossil is small, elongately fusiform, the spire much longer 

 than the aperture, solid, slightly shining. The whorls, including 

 the nucleus, are six in number, slightly convex and sloping, 

 girdled with from five to six solid, broad, rather raised rounded 

 keels, between which there are longitudinal raised lines which are 

 something like rather prominent lines of growth which do not 

 pass over the keels. The suture is very broadly grooved but not 

 deep. The nucleus is somewhat swollen and smooth, white and 

 highly polished. The aperture is ovate, attenuated at the ends. 

 The labrum is thickened by a varix slightly removed from the 

 edge. It has lirae inside. The lip is thin, reflexed, and the 

 canal is rather short but very distinctly recurved. 



This anomalous shell includes some of the characters of Fusus, 

 Nassa and Gohimbella. 



