57 



6. Solariellopsis multisqttamosa n. sp. P. IV, fig. 7. 



Stat. 95. 5°43'.5 S., ii9°44'E. 522 M. Stony bottom, i Spec. 



Shell conical, with rounded periphery and slightly convex base, umbilicated, white, scarcely 

 with a yellowish tinge. Whorls 6^\„, convex. Nucleus smooth, the subsequent whorl with concentric 

 ribs. On the lower whorls the sculpture consists of radiating ribs, with a row of compressed 

 tubercles, at some distance from the channelled suture, which disappear on the upper whorls; 

 these ribs are crossed by 2 spiral cords, with short, hollow scales, about 25 in number on the 

 last whorl. On the last, rounded whorl, the base is bordered by a third row of smaller scales. 

 Base slightly convex, with 3 rather large, spiral cords, of which that bordering the umbilicus is 

 the broadest; they are crossed by concentric ribs, running over the whole base and making the 

 cords crenulated. Umbilicus funnel-shaped, pervious, its wall with concentric, riblike striae, and a 

 spiral, beaded cord near the base, its larger diameter occupies Ya of that of the shell. Aperture 

 subcircular, straighter on the side of the slightly concave columella, which forms a conspicuous 

 angle with the basal margin, parietal wall with a thin layer of enamel, forming a small projection, 

 covering part of the umbilicus. Interior of aperture smooth, nacreous, with a flattened rib near 

 the outer and basal margin. 



Diam. maj. sY^, alt. 5Y0, apert. alt. 2, lat. 2 Mill. 



Differing from the allied species, by the rows of short scales, and from all the preceding 

 species, by the rounded periphery of the last whorl. 



7. Solariellopsis muricata n. sp. PL IV, fig. 8. 



Stat. 5g. Western entrance Samau-strait. 390 M. Coarse coralsand with small stones, i Spec. 



Shell conical, with rounded but keeled periphery and convex base, umbilicate, yellowish- 

 white. Whorls 6, convex, nucleus wanting. Sculpture consisting on the upper two whorls, of nearly 

 simple concentric ribs, on the next two, the ribs are crossed by two spiral lirae, producing short 

 tubercles on the ribs, where they cross them. Last two whorls with plicae near the channelled 

 suture, with a row of tubercles, bordering an infrasutural sulcus; another similar row, a little 

 lower on the concentric ribs and a third, consisting of compressed tubercles, (about 30 on the 

 last whorl) near the base of the whorls ; these tubercles, especially those of the peripheral row, 

 are connected by spiral lirae, of which the lowest represents the keel. The convex base is 

 sculptured by four spiral cords, of which that near the keel, bears strong, compressed tubercles; 

 those of the more central cord are smaller, and the innermost two are strongly beaded, the inner 

 one borders the umbilicus; moreover the base is sculptured by irregular, radiating riblets and like 

 the upper part, by microscopic striae. Umbilicus funnel-shaped, pervious, concentrically striated 

 and plicated, and with two beaded spirals near the base, its largest diameter about "/j of that of 

 the shell. Aperture subcircular, outer and basal margin with short plicae in the interior. Columella 

 concave, reflected over the umbilicus, with two denticles near its base, of which the basal one 

 is the largest, parietal wall with a layer of enamel, connecting the margins, slightly projected 

 over the umbilicus, its margin a little thickened; interior of aperture inconspicuously nacreous. 



57 



SIBOGA-EXPEDITIE XLIX' rt. 8 



