Palaeontologii of the Older Tertiary. 335 



geological work in Gippsland, and several specimens of this 

 species were presented by hiui to the National Museum collec- 

 tion, Melbourne. This species has appeared in some of our 

 local lists of fo'ssils under the manuscript name of Bankivia 

 maxima, and attributed to Tate as author, but the above name 

 will now replace it. 



Pleupotoma murpayana, sp. nov. (PL XIX., Fig. 10). 



Description. — Shell small to medium size with a rather blunt 

 apex, slender elongate spire, and a body-whorl shorter than the 

 spire. 



Embryo consisting of about two whorls and a half, blunt 

 apically, smooth and inclined to be angled medially after about 

 the first half-turn ; this portion is also rather more tumid and 

 protrudes over the remainder of the embryonic whorls, spire 

 whorls seven, rather flat to slightly convex between the chan- 

 nelled sutures owing to the marked overlap of the whorls. Whorls 

 strongly nodosely keeled about the middle of each whorl and 

 forming a well-marked shoulder on the body-whorl, also bearing 

 spiral threads, usually two well-developed ones below the keel 

 on each spire whorl with finer intercalated threads, and fine 

 threads above the keel on the slope of the posterior suture. The 

 body-whorl shows four strong spiral threads on the anterior 

 slope in front of the keel, with finer threads of two degrees in 

 the interspaces, and thence to the end of the snout spirally 

 striate. The spiral sculpture is crossed by striae and undula- 

 tions parallel to the lines of gi-owth giving rise to a olathrate 

 appearance on the slope towards the posterior suture. The keel 

 marks the position of the sinus and is ver}" regularly and acutely 

 nodulose, nodules about eighteen to twenty on the penultimate 

 and body-whorls. Aperture ovate, extending into a compara- 

 tively broad, straight canal of only moderate length. Outer lip 

 thin and sharp, with a broad, deep sinus at the shoulder, thein.ce 

 ascending with a fair overlap on the penultimate whorl. Colum- 

 ella smooth, straight, and rapidly tapering. 



Dimensions.— Length, 28 mm. ; breadth of penultimate-whorl, 

 vS mm. ; breadth of body-whorl, 9 mm. ; length of aperture and 

 canal, 12 mm. ; breadth of aperture, 3 mm. Smaller specimens 

 of length, 21 mm. ; breadth, 7 mm. 



