92 REV. R. BOOG WATSON ON THE 



whorls are simply spiralled ; here the spirals are cross hatched. 

 T. nobilis, Phil., is much larger, is natter on the base, and is not 

 so closely spiralled. T. euglyptus, Ad., has the whorls much 

 rounder. 



19. Trochus (Solariella) philippensis, n. sp. 



St. 161. April 1, 1874. Off the entrance to Port Phillip, 

 Australia. 38 fms. Sand. 



Shell. — Bather like T. tumidus, but with a broader base, more 

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

 colour. 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 

 stria?. 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. Colour faintly iridescent all over, creamy 

 white, flecked with zigzag lines of crimson, which on the upper 

 whorls are narrow and regular, on the penultimate whorl are 

 remote, and on the last are irregular, broken, and crowded. 

 On the base there are eleven to twelve elongated radiating 

 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 -J- 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 and very distinctly 

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

 little oblique, round. Outer lip thin and sharp, not at all ex- 

 panded. 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 per- 

 vious, and deeply impressed at the suture, which runs spirally up 

 to the apex within. H. 0*275. B. 033, least 03 Penultimate 

 whorl 0-085. Mouth, height 015, breadth 0'14. 



Solariella is a MS. generic name of Searles Wood, published 

 in his Catalogue of Crag Moll, in 1842, and suppressed by him as 

 a mere synonym of Margarita in his Crag Moll. (Pal. Soc.) vol. I. 

 p. 134. Adams revives it in his ' Genera ' as a subgen. of Monilea, 

 with which it has nothing specially to do ; but it may not be amiss 



