EEPOET ON THE GASTEROPODA. 75 



40. Trochus (Solariella) albugo, Watson (PL VI. fig. 8). 



Trochus (Solariella) albugo, Watson, Prelim. Report, pt. 5, Journ. Linn. Soc. Lond., vol. xv. p. 94. 



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



SlielJ. — Small, conoidal, with a tumid conical hase, bluntly bicarinate, umbilicate, with 

 a resinous lustre, brown, flecked with crimson and white. Sculpture : Very many irregular 

 oblique faint lines of growth, with a few remote rounded spirals, which are very weak 

 above, stronger on the base, and of which two at the periphery form a feeble double carina. 

 Colour : A pale transparent resinous brown, flecked below the sutures and at the periphery 

 with alternate spots of white and crimson ; the latter colour runs in minute zigzag streaks 

 down the shell ; there are also, both above and on the base, a few delicate spirals of 

 alternate crimson and white specks. Spire rather low, with curved profile lines and a blunt 

 round apes. Whorls 5, rounded and sloping above, flat at the periphery, and tumid on the 

 base. Suture linear and very slightly depressed. Mouth rather large, round. Outer lip 

 thin. Inner lip thin, hollowed out backwards, and bending somewhat across the umbilicus. 

 Umbilicus a broad shallow funnel, contracting to a small deep hole. H. 0*125 in. B. 0*2, 

 least 0-15. Penultimate whorl, 0*05. Mouth (in consequence of obliquity), height 0*125, 

 breadth 0*1. 



This species differs from Trochus (Solariella) lamprus, W., in being higher, with a larger mouth, and 

 most of all in colour and in sculpture. It is perhaps most like Trochus (Solariella) vcrnicosus, Gould, 

 but that is flatter and has a much wider umbilicus. The name is derived from the white spots 

 which fleck the shell. 



41. Trochus (Gibbula) glyptus, 1 Watson (PL VI. fig. 6). 



Trochus (Gibbula) glyptus, "Watson, Prelim. Report, pt. 4, Journ. Linn. Soc. Lond., vol. xiv. p. 694. 



Station 164b. June 13, 1874. Lat. 34° 13' S., long. 151° 38' E. Off Sydney. 

 410 fathoms. Green mud. 



Shell. — Like Trochus magus, L., but carinated, higher, less scalar, and much more 

 delicately and richly sculptured. Sculpture : Spirals — a flat shoulder below the suture is 

 followed by an angulation, on and below which is a double row of smallish, round, but 

 pointed tubercles, which are remote from one another but run in pairs on the two rows. 

 The tubercles in each row are connected by a slight rounded thread. On the second, third, 

 and fourth whorls these rows coalesce into one ; on the last whorl they are about 0*05 inch 

 apart. At the periphery is a strong angulation bearing a sharp carina. About 0*05 inch 

 above this is a spiral thread, which, as well as the carina, is ornamented with delicate, sharp, 

 laterally-compressed beads separated from one another by about twice their own size. 



1 yXuvTos, carved. 



