CANTHARIDUS. 125' 



U. S. Expl. Exped. Moll., p. 181, t. 12, f. 206.— Fischer, Coq. Viv., 

 p. 133, t. 46, f. 1. — T. pallidas Homer, et Jacq. Voy. au Pole-Siid,. 

 p. 55, t. 14, f. 12, 13. (Not T. pallidus Forbes).— T. rostratus 

 KiENER, Species et Icon., t. 46, f. 1. — T. torosus Quoy, mss. in 

 KiENER, Species et Icon., genre Trochus, t. 46, f. 3. — Fischer, Coq. 

 Viv., p. 136, t. 46, f. 3. 



I am disposed to refer to one species all of the coarsely ribbed 

 Cautharidus of New Zealand included in the above synonymy. 

 The description given above applies to the typical -purpuratus. The 

 following may be separated as varieties. 



Var. TEXTURATus Gould. PI. 45, figs. 41-43. 



Form as in typical C. purpuratus. The sculpture consists of five 

 broad rounded spiral ribs on the penultimate, nine or ten on the last 

 whorl. The ribs have a secondary sculpture oi fine spiral strice, the 

 whole surface covered by sharp incremental strise which are 1am- 

 ellose in the narrow interstices between ribs. Aperture brilliantly 

 nacreous within. Color whitish, longitudinally striped with red or 

 purplish ; a])ical whorls roseate. 



Var. TOROSUS Quoy. PI. 45, fig. 45. 



Imperforate, elongate-conical, spire acute; whorls 7 to 8, livid- 

 reddish or ashy, slightly convex, radiately irregularly striate, with 4 

 low, transversely striated spiral cinguli ; body-whorl subcarinate ; 

 base convex, 4-lirate; aperture ovate; columella white, arcuate, 

 margins greenish. Alt. 26, diam. 15 mill. (Fischer.) 



Nothing more than an elongated form of the preceding, scar-cely 

 distinct enough for varietal rank. Specimens before me are inter- 

 mediate between texturatus and torosus in form and coloration. 



C. PULCHERRiMus Wood. PI. 46, figs. 78, 79. 



Shell imperforate, acutely conical, elongated, thick and solid ; 

 spire straightly conical, apex subacute, sutures linear ; whorls about 

 6, nearly flat, the penultimate with four or five broad flat spiral ribs, 

 often unequal in width, separated by narrow impressed grooves, the 

 body-whorl subangular, with four or five broad fiat low ribs above 

 the periphery and more numerous narrower ones on the base. The 

 ribs u'e usually purplish-crimson articulated with narrow white 

 marks. Aperture small, less than one-half the length of shell, 

 oblique, oval, brilliantly iridescent and somewhat sulcated inside, 

 peristome edged with a line of intense crimson, bordered with green- 



