25 



I see it agrees as good as may be desired, with the figure of Trosciiel (Gebiss der Schnecken, 

 PI. 19, tig. 11) and is quite different from his figure of the radula of T. concinnus (1. c. PI. 19, 

 fig. 9). This concerns particularly the lateral teeth with large cusps, as the shape of the 

 rhachidian tooth can not easily be traced. 



7. Turbo (Senectus) gemmatus. Reeve. PI. VI, fig. 11. 



Reeve. Proc. Zool. Soc. Lond. 1848, p. 50. 



Conch. Ie. Vol. IV, Turbo, fig. 62. 



Tkvon. Man. of Conch. Vol. X, p. 206, PI. 44, fig. 68, 69. 



Stat. 33. Ray of Pidjot, Lombok. 22 M. 3 Spec. 



Stat. 99. North-Ubian. 16 — 23 M. Lithothamnion-bottom. 3 Spec. 



Stat. 109. Pulu-Tongkil, Sulu-Archipelago. 13 M. Lithothamnion-bottom. 1 Spec. 



Stat. 240. Banda. 18 — 36 M. Lithothamnion-bottom. 3 Spec. 



Stat. 313. Dangar Besar, Saleh-bay. Up to 36 M. Sand, coral and mud. 15 Spec. — Reef. 2 Spec. 



Stat. 315. Sailus Besar, Paternoster-islands. Up to 36 M. Lithothamnion-bottom. 2 Spec. 



Only one specimen from Stat. 313, has the typical colour, as described by Reeve namely: 

 uniformly red ; the other specimens vary much in colour and markings, some specimens are 

 nearly typical, varying from light orange-red to dark coral-red, and a few are olive-green; nearly 

 all the specimens are marked with white spots or flames, often mixed with dark or black 

 granules. Many of them have a row of granules next the suture, forming a necklace of white 

 and black. There is a tendency to have four such zones on the bodywhorl, the second at the 

 shoulder, the third lower, the fourth near the base, occupying as a rule the first, fourth, seventh 

 and eleventh or twelfth row of granules, but as there is some variation in the sculpture, there 

 may be some rows more or less, in most cases, I see very small intermediate granules. The 

 columella is surrounded by a thicker rib at its base, which may be indicated as crenate, this 

 rib is yellowish-white, with darker yellow in the interstices. This lighter colour extends in a 

 few specimens over the base of the shell. In some specimens, more rows of granules are 

 variegated with dark and white, giving to the shell a very beautiful mottled appearance. The 

 granules are mainly strongly developed, but in two specimens they are somewhat obliterated. 

 The operculum, which as far as I ara aware, has not yet been described, is slightly oval, one 

 specimen being 10 Mill. in its largest diameter and 9 Mill. in breadth; the inner surface is 

 covered by a light brown cuticle, darker towards the outer margin and towards the margin of 

 the outer whorls, the number of which seems to be four; the outer one is very broad, the 

 nucleus is subcentral, but approaches the basal and columellar margins. The external surface is 

 porcelain-white, very thick near the left upper part, less so on the right side ; it is covered 

 with not very conspicuous, somewhat vermiform rugosities, and has a marked depression on the 

 lower half, slightly to the left, nearly opposite to the nucleus on the internal side. The right 

 margin is smooth and shining. 



& 



8. Turbo (Senectus) margaritaceus Linné. 

 LlNNÉ. Syst. Nat. Ed. X, p. 764, N° 545. 

 Stat. 53. Bay of Nangamessi, Sumba. Up to 36 M. Coralsand. 1 Spec. 



S1BOG A-EXPEDITIE XL1X' ,;. 



