MONILEA-MINOLIA. 271 



lose radiating stride; spiral cinguli 4 on the penult, whorl ; last 

 whorl elongated, convex, with a zone of white and chestnut spots at 

 the periphery, convex beneath, whitish or maculate with chestnut, 

 clathrate, with about 4 concentric lirre, aperture subrhomboidal, lip 

 sub-duplicate within ; columella a little arcuate ; umbilical area 

 funnel-shaped, spirally plicate, carinated at its edge. 

 Alt. "2->, cliam. 2 mill. (Fischer?) 



'' Ouagap et Kua-Kue " New Caledonia. 



Trochus (Minolta) semiustus FISCHER, Journ. de Conchyl. 1879, 

 p. 23 ; /. c. 1886, t. 1, f. 6. 



Seems to belong to the group of species which I have called Cono- 

 trochus rather than to Minolta proper. 



M. PHILTPPENSIS Watson. PL 36, figs. 15, 16. 



Shell rather like Trochus tumid us, Mont, but with a broader base, 

 more conical and less scalar, with a large open umbilicus and brilliant 

 color. Sculpture : the shell is gathered into small regular flat puckers 

 below the suture ; these are weaker on the last whorl. The whole 

 surface is covered with very fine oblique longitudinal strise. Spirals : 

 there are very numerous fine, sharp, undulating scratches, which on 

 the middle of the base are shallower and wider apart, but toward the 

 umbilicus again become sharper and more crowded. Within the 

 umbilicus are four or five somewhat beaded spirals, the first and 

 strongest of which forms an umbilical carina. Color faintly irides- 

 cent all over, creamy white, flecked with zigzag lines of crimson, 

 which on the upper whorls are narrow and regular, on the penul- 

 timate whorl are remote, and on the last are irregular, broken and 

 crowded. On the base there are eleven to twelve elongated radiat- 

 ing crimson spots. The first three whorls are a pale orange-yellow. 

 Spire rather high, scalar, apex small, bluntly pointed. Whorls 6, 

 with a flat shelf below the suture, angulated at about one-fifth of 

 their breadth, and rounded from the angulation to the suture. The 

 last whorl is bluntly angulated at the edge of the rounded base. 

 Suture strong, being slightly impressed aud very distinctly marked 

 by the angle at which the adjoining whorls meet. Mouth little 

 oblique, round. Outer lip thin and sharp, not at all expanded. 

 Inner lip thin and sharp, a very little patulous on the pillar, where 

 it also retreats a little, so as to form a slight open sinus ; brilliantly 

 iridescent within. Umbilicus wide and pervious, and deeply 

 impressed at the suture, which runs spirally up to the apex within. 



