732 STUDIES ON AUSTRALIAN MOLLUSCA, xii., 



originally named by Morch,* as constituting his new genus Peri- 

 sternia, was Turhinella nassatiila Lamarck. This was selected 

 by H. ik A. Adainsf to represent the genus, a course followed by 

 Cossmann.| As example of Peristernia, Fischer§ gave L. wagiieri 

 Anton, a name not in the original list, but one advanced by 

 Tapparone-Canef r'i|| to replace 1\ crenulata Reeve, the first species 

 of Morch. For better definition, F nassatula is now declared 

 the type of Peristeruia. 



From the original locality, N . hrazieri ranges north to Ballina 

 and Caloundra, Queensland. 



Engina gannita, sp.nov. 

 (Plate Ixxxiv., fig.87.) 



Shell solid, fusiform, acuminate at either extremity. Colour 

 uniform cinnamon-brown. Whorls eight, including a protoconch 

 of three smooth whorls. Suture deeply channelled. Sculpture : 

 undulating radial ribs, about ten to a whorl and set a little 

 obliquely, extend from the suture to the base; both ribs and 

 interstices are traversed by prominent polished spiral cords 

 terminating at the lip; the last whorl carries fifteen of these, and 

 the upper whorls three or four; between the major spirals, run 

 three or four small threads. Aperture oblique, narrowly pyri- 

 form, arched posteriorly, outer lip contracted, slightly denticu- 

 lated by the ends of the spiral cords; within are eight entering 

 ridges, the posterior largest. Inner lip with a free margin for 

 most of its length, medial with four strong plaits, posteriorly a 

 double tooth at the angle and a few small wrinkles. Canal short 

 and open. Length, 15; breadth, 7 mm. 



In the British Museum, I failed, after some search, to find a 

 representative of this species. Engina costata Pease,1I is like it 

 in general appearance, and has the same sculpture, but is a more 



* Morch, Cat. Yoldi Coll., 1852, p.99. 



t H. & A. Adams, Gen. Rec. Moll., i., 1853, p. 153. 



t Cossmann, Essais Pal^oconch. comp., iv., 1901, p. 47. 



§ Fischer, Man. Conch., 1884, p.617. 



11 Tapparone-Canef ri, Journ. de Conch., xxvii., 1879, p. 322. 



IF Pease, Proc. Zool, Soc, 1860, p. 142. 



