112 MR. G. F. ANGAS ON NEW AUSTRALIAN SHELLS. [Jan. 24, 



9. TURBONILLA NITIDA, n. S. (PI. XIII. fig. 9.) 



Shell sharply subulate, turreted, rather thin, white, shining ; 

 whorls thirteen, slightly convex, longitudinally prominently rather 

 broadly ribbed, interstices smooth, narrow, ribs abruptly ceasing at 

 the periphery of the last whorl ; sutures impressed ; aperture small, 

 subquadrate ; columella straight ; outer lip thin, a little produced in 

 front. Length 5 lines, breadth 1 line. 



Dredged in Port Jackson {Coll. Angas). 



10. Odostomia l^vis, n. s. (PI. XIII. fig. 10.) 



Shell ovately conical, thin, subdiaphanous, shining, white ; whorls 

 seven, a little rounded, last whorl not quite half the length of the 

 shell ; sutures channelled ; aperture oblong-ovate, a little produced 

 anteriorly ; columella fold transverse and strongly developed ; outer 

 lip thin, acute, simple. Length 3| lines, breadth \\ line. 



Dredged in deep water in Port Jackson {Coll. Angas). 



11. Odostomia lactea, n. s. (PI. XIII. fig. 11.) 



Shell elongate, rather thin, smooth, white, shining ; whorls six, 

 flattened ; sutures impressed ; aperture small, ovate, somewhat pro- 

 duced anteriorly, one-third the length of the shell ; columella-fold 

 strong and a little oblique ; outer lip thin, simple. Length 3 lines, 

 breadth 1 line. 



Dredged in deep water, Port Jackson {Coll. Angas). 



12. Odostomia (Parthenia) pascoei, n. s. (PI. XIII. fig. 12.) 



Shell ovately conical, rather thin, rimate, pale yellowish brown ; 

 whorls seven, longitudinally rather closely plicate, plicae evanescent 

 on the basal portion of the last whorl, transversely finely striated ; 

 whorls eight, somewhat convex, last whorl rather ventricose ; sutures 

 distinct ; aperture ovate ; columella-plait moderate, transverse, situ- 

 ated a little within the aperture ; outer lip rounded, simple. Length 

 4 lines, breadth 1| lin£. 



Dredged in deep water. Port Jackson {Coll. Angas). 



13. Odostomia (Parthenia) kreffti, n. s. (PI. XIII. fig. 13.) 



Shell fusiformly turreted, moderately solid, very narrowly rimate, 

 white ; whorls nine, strongly and closely longitudinally plicate, plicae 

 rounded, scarcely evanescent at the base of the last whorl, very finely 

 transversely striated, last whorl moderate ; sutures channelled ; aper- 

 ture small, ovate ; columella-plait transverse, rather conspicuous. 

 Length 3^ lines, breadth 1 line. 



Port Jackson, deep water {Coll. Angas). 



14..Styloptygma aurantiaca, n. s. (PI. XIII. fig. 14.) 



Shell acutely elongate, rather tliin, shining, fulvous orange, with 

 a pale band next below the sutures, darker on the lower whorls, 

 fading into white on the upper whorls, which are glossy and sub- 

 transparent ; spire turreted ; whorls eight, very slightly convex. 



