336 



1. Tupritella septifraga, ^ixe. uov. Pi. viii., fig. 5. 

 Shell narrowly lanceolate-turreted ; whorls 18, apex unknown 



anterior whorls concave, sloping to the sharp angulation at (and 

 somewhat imbricating over) the anterior suture ; posterior whorls 

 flat or very slightly concave, slightly keeled in the anterior- 

 fourth, suture linear. 



Surface ornamented with deeply sinuous, crowded, fine stride 

 of growth ; the anterior keel of the anterior whorls two to three 

 lined, faintly and distantly lined on the concave area. 



Aperture subquadrangular, outer lip with a broad, moderately- 

 deep sinus (that is judging from growth-lines). 



The interior is septated at every two or three whorls through- 

 out the posterior-half of the length of the shell ; and the facility 

 with which the shell breaks at these junctions has suggested the 

 specific name. 



Dimensions. — Length (incomplete), 100 ; width, 17. 



Locality. — Eocene : Bird-rock Blufl', Geelong ! . 



The absence of conspicuous spiral ornament removes this 

 species from somewhat similar congeners, such as T. Cumingii, 

 Reeve, T. imbricatnria, Lk., <kc. 



2. Turpitella pagodula, spec. hoc. Pi. viii., tig. 10. 



Shell small, acuminately turreted ; whorls thirteen (inch 

 embryo), with a prominent roundly-angled ridge over the anterior 

 suture, with or without a less conspicuous ridge at the posterior 

 suture; apical whorls two, very small, inflated; posterior spire-whorls 

 keeled over the suture. Surface smooth, shining, closely insinu- 

 ate-striate transversely and faintly spirally-lined in the concave 

 area between the anterior and posterior ridges. Periphery of 

 body-whorl subtended by a subordinate keel ; base with about 

 ten concentric threads crossed by radial stride. Aperture sub- 

 quadrangular ; outer lip with a semicircular insinuation above 

 the anterior keel. 



Dimensions. — Length, 12'5 ; width, 4-25. 



Locality. — Miocene : Gippsland Lakes (not uncommon !). 



This species has some affinity with the recent T. exoleta, Linn., 

 but its small size and obsolete posterior ridge distinguish it ; also 

 with T. granulifera, Tenison-Woods, wdiich is, however, conspicu- 

 ously different* by its granulated keels; and more so with 

 T. terebellata, Tate, m.s., Newer Pliocene, Limestone Creek, 

 W. Victoria, which has the anterior keel nodulose. 



3. Tupritella Aldingse, Tate. Pi. viii., fig. i. 

 Eeference.—Tran^. Roy. Soc. S. Aust., vol. V., p. 45, 1882. 

 Shell acutely pryamidal, a little more than three times as long 

 as broad, whorls about twenty in a length of 33 mm., sub- 



