REPORT ON THE GASTEROPODA. 63 



pillar-lip is veiy thin, slightly excavated longitudinally, and reverted on the minute 

 umbilicus, which it almost wholly conceals. Behind it is a very narrow furrow. H. 0*27 in. 

 B. 0-22, least 0'2. Penultimate whorl, 0'075. Mouth, breadth 0-117, height 0125. 



In form and details of sculpture this species is extremely like Trochus (Thalotid) elisa, Gould, 

 from island of Capul, in the Philippines (British Museum), but is very obviously different. 



20. Trochus (Ziziphinus) tinctus, n. sp. (PL XVII. fig. 2). 



Station 162. April 2, 1874. Lat. 39° 10' 30" S., long. 146° 37' E. Off East 

 Moncoeur Island, Bass Strait. 38 fathoms. Sand. 



Shell. — Small, conical, high spired, flatly rounded on the base, sculptured, creamy 

 white, with faint chestnut specks. 1 Sculpture: Longitudinals — there are wrinkled lines of 

 growth above, and on the base fine hairdike striae. Spirals — there are strong threads 

 parted by slight furrows, 10 above the periphery on the last whorl, 6 on the penultimate 

 whorl, between the second and third threads above the periphery a slightly broader and 

 more distinct furrow occurs ; all the threads are closely packed, with rather coarse round 

 tubercles ; the edge of the base is pretty sharply angulated ; the angulation becomes blunt 

 and rounded toward the mouth ; on the base there are 10 flatfish, somewhat unequal 

 untubercled threads parted by very shallow and narrow furrows, which become somewhat 

 stronger toward the pillar. Colour creamy, sparsely speckled, with small pale chestnut- 

 coloured dots. Spire rather high, conical. Apex a little coarse, but small, consists of 1^ 

 embryonic whorls, of which the tip is red and elevated, somewhat coarsely but regularly 

 honeycombed. Whorls 6^, conical, with flattened slopes of slow regular increase ; 

 the last, which is not large, is angulated at the periphery, descends at the mouth, and has 

 a flatly conical, slightly convex base. Suture small, but coarse, and a little impressed. 

 Mouth very oblique, but with a perpendicular pillar ; it is nearly square in form ; there is 

 very little nacre within. Outer lip thin ; at its insertion it is a good deal drawn in on 

 the base of the shell ; it is patulous on the side, but very little so on the base. Pillar 

 lip is broad, strong, reverted, channelled, twisted, and bluntly angulated, patulous, but 

 not toothed at its junction with the base. H. 0"25 in. B. 0'23. Penultimate whorl, 

 height 0'07. Mouth, height O'll, breadth 0-11. 



An inconspicuous but pretty little species, which, though small, seems quite full-grown. 



21. Trochus (Elenchus) badius, Wood. 



Trochus badius, Wood, Ind. Test. (ed. Hanley), p. 221, Suppt., pL vi. fig. 46. 



Monodonta rosea, Lamarck, Anim. s. vert., vol. vii. p. 37, and (ed. Desk.) vol. ix. p. 181, sp. 22. 



1 Hence the name. 



