294 TESTACEOUS MOLLUSCA. 



examples, are, on the principal rows, slightly broader at their termi- 

 nation, and disposed to foliation : interstices minutely shagreened. 

 Var. The laminae orange. Var. The laminae short and frondose. 

 5. W. Columbia. A kind of black lineated spotting, which, in certain 

 individuals, flanks the downward course of the ribs, is generally per- 

 ceptible at their commencement. 



S. Ciliatus. Sow. Th. 1, p. 429 (for S. Aculeatus, Brod. Z. P. 

 1833), t. 89, /. 52. Small, very delicate and fragile; white, with a 

 very few small blackish chocolate-coloured specldess adjacent to the 

 beaks, whence diverge numerous moderately distant raised striae, that 

 are armed with excessively slender and elongated lamellar curved 

 spines. 1£. Lord Hood's I. Evidently immature; possibly the 

 young of aurantius. 



S. Tenuispinosus. Sow. Th. 1, p. 421, t. 87,/. 37. Small, white, 

 more or less tinged with orange, and speckled with crimson at the 

 beaks ; surface everywhere scabrous, crowded with radiating costellae, 

 which are thickly set with peculiarly elongated slender spines and 

 spinous spatulae. If. Philippines. Very closely allied to Longi- 

 tudinalis, but with a more delicate aculeation. 



S. Limbatus. Sow. Z. P. 1847; Th. I, p. 427, t. 88, /. 51. 

 Large, solid, ranging from orange to purplish crimson in the same 

 specimen ; radiated with numerous little elevated ribs, none of which 

 are preeminently (or at regular intervals) of peculiar magnitude : 

 ribs closely foliated with tolerably equal rows of broad scales ; inter- 

 stices shagreened ; inner margin purple. 4. Persian Gulf. 



S. Cumingii. Sow. Th. 1, p. 425, t. 89, /. 62. Of an uniform 

 purplish red; with about 6 rather distant and not much elevated 

 ribs, which are foliated with extremely thin and flat flexuous laminae, 

 whose edges are so curled as to resemble the common Fucus 

 (Digitatus) of our shores. These are broader at their apices than at 

 their bases, and those near the margin are remarkably elongated. 

 The intervals between the ribs are filled with very numerous raised 

 striae (or delicately narrow costellae), which are more or less echinated 

 by most minute spines. 2£. Java. The beak of the only known 

 specimen of this exquisitely beautiful shell (which is about 2 inches in 

 length) does not vary in colouring from the prevailing hue. 



S. Sinensis. Sow. Th. 1, p. 427, t. 87,/. 32, 3. Small, uniformly 

 pale, and of a yellowish pinkish or lurid flesh-colour ; surface towards 

 the beaks covered with very numerous raised squamiferous striae, 

 towards the margin with large more or less crowded laminae, which 

 are almost always broadest and rounded at their apices and very 

 seldom are elongated or disposed to palmation. These laminae, 

 although arranged in radiating rows of rather unequal size, can 

 scarcely be said to be seated upon ribs, the latter being so depressed 



