REPORT ON THE GASTEROPODA. 267 



6. Marginella (Glabella) chrysea, 1 n. sp. (PI. XVI. fig. 8). 

 October 29-December 16, 1873. Sea Point, Cape Town. 



Shell. — Elongately gibbously oval, thin, almost transparent, lustrous, of a rich ochry 

 yellow, short-spired, small-mouthed, not truncate in front, with a smooth and varixed 

 outer lip, and with 3 folds on the pillar. Sculpture : There are feeble lines of growth 

 with here and there an indication of an old labral varix ; one row of these varices nearly 

 corresponds on successive whorls: under the microscope the whole texture of the shell 

 seems formed of very minute and regular rods, crossed at right angles by equally minute 

 spiral lines on the surface of the shell. Colour a rich, somewhat ochry yellow ; not very 

 lustrous. Spire rather short, conical, with a very slight amount of enamel, which in the 

 suture is whitish, with a ruddy yellow thread shining through the shell from within. Apex 

 blunt and flatly rounded. Whorls b\, not small, slightly convex, the last long and 

 narrow. Suture very distinct. Mouth long and narrow, broadening slightly at the pillar, 

 barely truncate in front. Outer lip ascends at its insertion, has a slight varix with a 

 sharp edge, which is straight in the middle and retreats above, forming a sHght, shallow 

 sinus ; in front, too, it retreats, but not sufficiently so to emarginate the shell ; there are 

 no teeth within the lip. Inner lip not in the least thickened above or at the point, barely 

 convex across the body ; the folds on the pillar are 3, and are very oblique, the highest is 

 very slight, the front one is the strongest, and forms a flange round the point of the 

 pillar. H. 0'42 in. B. 0-2. Mouth, height 0-33, greatest breadth 0'07. 



This species is found in the British Museum as an unnamed Marginella from Cape Town. 

 It somewhat resembles Marginella avena, Val., but is shorter and broader, thinner in its shell, 

 uniform in colour, not contracted in the middle of the body, and has 3, not 4, folds on the 

 pillar. From Marginella rufula, Gask., a Cape species which it slightly resembles, it differs in 

 form and colour and in having only 3 folds, not 4, on the pillar. 



7. Marginella (Glabella) valida, n. sp. (PI. XVI. fig. 3). 



Station 185b. August 31, 1874. Lat. 11° 38' 15" S., long. 143° 59' 38" E. Off' 

 Eaine Island, Cape York, North-East Australia. 155 fathoms. Coral sand. 



Shell. — Small, gibbously biconical, strong, porcellanous, lustrous white, with a long 

 oblique, rather narrow mouth, a strongly varixed and feebly toothed outer lip, and foui 

 folds on the pillar. Sculpture: There are feeble unequal lines of growth. Colour 

 porcellanous white, lustrous. Spire moderately raised, conical. Apex excessively blunt 

 and rounded. Whorls nearly 5, slightly convex above, bluntly rounded at the periphery, 

 produced and barely concave on the base. Suture slightly impressed. Mouth long, 



1 xi^ gl °i> gold-gleaming. 



