134 CANTHARIDUS, 



The coloration is quite variable, but usually is as described above. 

 XJnicolored green specimens are before me. The aperture is some- 

 times so dilated that the spire seems to lean to that side. I have not 

 followed Philippi and Fischer in emending Quoy's irregularly 

 formed name. By error, fig. 66 of this species was grouped on the 

 plate with C. woodsianus. 



C. APiciNUS Menke. PI. 34, fig. 6, 7. 



Shell imperforate, elongated, solid, smooth, shining, grayish, or 

 brownish-yellow, with numerous narrow obliquely longitudinal red 

 lines; whole surface microscopically spirally striate, the strije coarser 

 on the base ; whorls 8 to 9, nearly flat, upper Avhorls pink ; spire 

 turrited, straight sided, acute ; sutures linear, sometimes white- 

 margined ; body-whorl rounded at the periphery ; aperture slightly 

 exceeding one-third the total length of shell, oval, beautifully 

 iridescent within, smooth, not sulcate ; columella with a subacute 

 tooth below the middle. Alt. 18, diam. 9 mill. 



W. Coast Axistralia (Preiss). 



Monodonta apicina Menke, Spec. Moll. Nov. Holl., p. 15 (1843) 

 — T. apicinus Phil., Conchyl. Cab., p. 133, t. 23, f. 5. 



This species is more slender than any other Phasianotrochus known 

 to me. It is allied to C. iriodon, but the coloration is different from 

 any form of that species, consisting of very numerous narrow 

 obliquely-descending red lines. 



Figure 6 is copied from Philippi. I have added that of a 

 specimen which seems to belong to this species. 



Philippi's remarks are as follows : Of all the shells I know, this 

 Trochid has the most brilliant luster. I count 11 to 12 whorls, 

 which are completely flat on the specimens before me, although on 

 those described by Menke they were somewhat convex below, con- 

 tracted above ; under a lens there is seen a very finely, densely striate 

 epidermis; these spiral stripe are more distinct on the base. The 

 color is brownish-yellow, with numerous fine, crowded, oblique rust- 

 brown longitudinal lines, often hard to perceive on account of the 

 golden and violet iridescence, the centrum whitish. 



Alt. 22, diam. 9 mill. 



C. LEUCOSTiGMA Menke. PI. 46, figs. 82, 83. 



Shell imperforate, slender, elongated-conical, solid, polished, fawn- 

 colored, darker at apex, marked with radiating pure Avhite or pink 

 blotches or sparcely scattered spots ; all over microscopically spirally 



