REPORT ^ONiTliE GASTEROPODA. 567 



scored longitudinally with fine regular bard. Whorls 8, besides those of the apex ; they 

 are flat on the sides, of slow and regular increase, and are parted by a strong sutural 

 furrow ; the last whorl is little larger than the penultimate, and has a short rounded base. 

 Suture oblique, strongly defined by its furrow, but in itself invisible. Mouth oblique, 

 irregularly four-sided, very acute-angled above at the sinus, and below at the canal. Outer 

 lip thin and sharp, angulated but not sinuated at its insertion ; from this point its edge 

 advances all the way to the base of the shell, at the corner of which it turns in a distinct 

 angle, and across which it is prominent ; the lip of the canal does not touch the pillar 

 point, so that the round canal is not closed. 1 Pillar short, twisted but very shortly 

 reverted at the point. Inner lip well defined, with a slightly thickened edge, concave. 

 H. 0-192 in. B. 0-057. Mouth, height 0-037, breadth 0-027. Apex, height 0-02, 

 breadth 0-014. 



This species is in a vague way very like a great many others of the genus, but is distinct from 

 any known to me. 



4. Alaba, H. and A. Adams, 1858. 



Species. 



1. Alaba (Diala) phasianella, Angas. 4. Alaba (Stiliferina) goniochila, A. Adams. 



2. Alaba (Diala) limnceiformis, Watson. 5. Alaba (Stiliferina) striata, n. sp. 



3. Alaba (Diala) albugo, n. sp. 6. Alaba (Stiliferina) sulcata, n. sp. 



7. Alaba (Stiliferina) fulva, n. sp. 



1. Alaba {Diala) phasianella, Angas. 



Alaba phasianella, G. F. Angas, Port Jackson Moll., Proc. Zool. Soc. Lond., 18G7, p. 113, pi. xiii. 

 fig. 18. 

 ,, „ E. A. Smith, On the genus Alaba, Proc. Zool. Soc. Lond., 1875, p. 538. 



April 17-18, 1874. Port Jackson, Sydney. 2 to 10 fathoms. 



Habitat. — Port Jackson. 



2. Alaba (Diala) limnceiformis, Watson (PI. XLI. fig. 7). 



Litiopa(1) limnmiformis, "Watson, Prelim. Report, pt. 5, Journ. Linn. Soc. Lond., voL xv, p. 123. 



Station 145. December 27, 1873. Lat. 46° 43' S., long. 38° 4' 30" E. Prince Edward 

 Islands, between Cape of Good Hope and Kerguelen. 50 to 150 fathoms. Volcanic 

 sand. 



SJiell. — Obliquely ovate, thin, smooth, whitish horny, with a slight almost covered 

 umbilical chink. Sculpture : there are many faint oblique lines of growth, but none other 



1 Since the above description was written the lip-edge in the single perfect specimen has been chipped by 

 an accident. 



