riuluhi of a inaK- spcciiiuMi from Slat. 33, has llio iccih in ;i loii^itiidinal rows, so iIk; s])('cics 

 belongs williout doubl to tlic Ivachi^lossa, which sccnuxl lo be still a little: (loublfiil to sonic 

 authors. They are placed in about qo subsequent rows; the median tooth (Mj is rather jjroad, 

 with a curx'cd base and 5 cusps, of which the median one is somewhal shorter than the lateral 

 ones; the laterals (i) ha\-e the buccinoid t\|)e, with two stront^ cusps, of which the distal one, 

 if the radula be e.xpanded, is b\- far the largest. Kobiclt (I.e. p. 31.}) writes on the <(enus: 

 "wenn Ilindsia (= Xassaria) wirklich zu den Kachiglossen gehort". 



The operculum seems to have a terminal nucleus, but seri"ate mari^ins; with 7 teeth on 

 the left, 8 on the rio"ht side; this is not in acc(M-dance with the dcscri])tion of Ad.vms, who 

 (I.e. p. 182) says: "Operculum horny, ovateh' unguiform, the margin entire". This statement 

 has been translated by Sowiair.v (1. c. p. 85) in latin. Kobelt does not mention it. Tryon, 

 (1. c. p. 104) says nothing about the margins. Trygn's figure of the radula of N. ac7eminata 

 (I.e. PI, 27, fig. 34) differs but little from my figure, but the median tooth is 6-cuspidate, with 

 2 smaller central cusps, his figure is a copy of that of Troschel (Archiv fur Naturgesch. 1868, 

 pi. 3, fig. 4) which I have not at hand. 



3. A^assai'ia aciiminata Reeve. 



Reeve. Proc. Zool. Soc. Lond. 1844, p. 116. 



Conch. Ic. Vol. II, Triton, fig. 54. 



SowERBY. Thes. Conchy]. Vol. Ill, p. 85, PI. i, fig. 10. 



Kobelt. Martini-Chemn. Conch. Cab. Ed. II, VoL III, Hindsia, p. 316, PI. j6, fig. 7, 8. 



Tryon. Man. of Conch. Vol. Ill, p. 221, PI. 84, fig. 539, 540. 



Stat. 51. Madura-bay. 69 — 91 M. Fine grey sand, coarse sand with shells and stones. 3 Spec. 

 Stat. 260. Nuhu Jaan, Kei-islands. 90 M. Sand, coral and shells, i Spec. 

 Stat. 289. 9°o'.3 S., 126° 24'. 5 E. 112 M. Mud, sand and shells. I Spec. 



A specimen from Stat. 100 is a young worn shell, having some resemblance with 

 this species, but slightly differing in sculpture, the canal is broader and I see narrow brown 

 lines. I cannot refer it to another known species; it is too bad for description, so I only wish 

 to mention it. 



Fam. Nassidae. 



Nassa Lamarck. 



I. Nassa arcularia Linne. 



LiNNE. Syst. Nat. Ed. X, p. 737, N" 395. 



KlENER. Coq. Viv. Vol. VIII, Buccinum, p. 94, PI. 28, fig. 115. 



Reeve. Conch. Ic. Vol. VIII, Nassa, fig. 25. 



KUSTER. ]\Iartini-Chemn. Conch. Cab. Ed. II, Vol. Ill, Buccinum, p. 18, PI. 4, fig. 19 — 21. 



Tryon. Man. of Conch. Vol. IV, p. 24, PI. 7, fig. 9, 10. 



Stat. 16. Bay of Kankamaraan, S. coast of Kangeang. 22 M. i Spec. 



Stat. -^j. Sailus ketjil. Paternoster-islands. 27 M. and less. Coral and coralsand. i Spec. 



Stat. 89. Pulu Kaniungan ketjil. Reef, i Spec. 



Stat. 169. Atjatuning, West coast of New Guinea. Reef, i Spec. 



Stat. 231. Amboina. Reef, i Spec. 



65 



SIBOGA-FXPEDITIE XLIXV. ' 4I 



