128 



Uromitra terebriformis, Tate (sp.). 



1889. Mitra terebrceformis, Tate, Trans. Eoy. Soc. Soutli Aust. vol. xi. 

 p. 141, pi. V. fig. 5. 



The external configuratioii of this shell is that of a typical 

 Terehra, but the protoconch is distinctive, and closely resembles 

 that of the species of Uromitra already described, whilst the 

 columella is furnished with four stout, oblique plaits, becoming 

 progressively larger antero-posteriorly. The whorls are longi- 

 tudinally costate, and a narrow band accompanies the well-marked 

 suture. The anterior portion of the body-whorl is constricted, 

 and is spirally corrugated. It has certain affinities with Pyrami- 

 mitra, Conrad, which, however, is not much constricted anteriorly, 

 and only carries two columellar plaits. 



Dimensions. — Length 19 mm. ; breadth 6'5 mm. ; length of 

 aperture 8 mm. 



Form, and Loc. — Miocene: Muddy Creek, Victoria. 



G. 4251. A series, mostly examples of the adult. 



Fresented hy John Fennant, Esg. 



Uromitra clathurella, Tate (sp.). 



1889. Mitra clathurella., Tate, Trans. Eoy. Soc. South Aust. vol. 



p. 142, pi. viii. fig. 8. 

 1893. Mitra clathurella, Tate and Dennant, id. vol. xra. pt. 1, p. 220. 



Ifone of the specimens in the Museum possess a well-preserved 

 protoconch, which, however, appears to be small and obtuse. The 

 ordinary whorls are four in number, convex, depressed posteriorly 

 in the neighbourhood of the suture, and marginated. They are 

 ornamented with oblique costfe, fine transverse strisE, and spiral 

 threads in front of the antesutural depression. Professor Tate 

 remarks [op. sxipra cit.) that the aperture is "narrow-oblong, 

 contracted in front to a short broadish, bent, and slightly reverted 

 beak. Outer lip slightly ascending on the penultimate whorl, 

 slightly emarginate at the suture, smooth within ; columella with 

 four rather distant, transverse plaits." 



The species appears to be very variable. The drawing accom- 

 panying Professor Tate's description is more granose in aspect 



