210 



II" this :i without the operculum, it might 1><- considered to be a varietj of 



the polymorph -\ but its umbilicus is much more filled by the funiculum. Th< 



culum is quite different from that oi marochiensis described bj Watson (Challenger- 



tropoda, p. nd from specimens which I could compa 



ii. Melvill. 



\ 11 i . Memoirs and Proc. Manch. Lit. and 1'hil. Soc. Vol. 41, 1897, N°7, p. 1 1, PI. 6, fig. 20. 



\ . [20°2i E. Sulu Sea. 350 M. Sand. 1 Spec. 



Th imen is a young, empty shell; it is not probable that this species with its 



minent colour-markings, has lived at so greath a depth. 



12. Natica asellus Reeve. 



REEVE. Conch. Ie. Vol. IX, Natica. fig. 136. 



rRYON. Man. of Conch. Vol. VIII, p. 24, PI. 6, fig. 3, 4. 



Stat. 7. Near reef of Batjulmati (Java). 15 M. ('mal and stones. 1 Spec. 



The umbilicus of the Siboga-specimen is not quite closed and the row of small dots between 

 the two blue-black bands is wanting. I think these differences are of too little importance, to be 

 in doubt about the identity. 



[3. Natica atypha Watson. 



WATSON. Report Voy. Challenger. Zool. Vol. XV, Part 42, Gaptrop. p. 43S, Tl. 27. fig. 2. 



2. Madura-strait. 56 M. Grey mud with some radiolariae. 1 Spec. 

 Stat. 47. Baj of Bima, near South fort. 55 M. Mud with patches of line coralsand. 1 Spec. 

 West of Kwandang-bay-entrance. 72 M. Fine sand with mud. 5 Spec. 



The specimens are dead, bleached shells. 



14. Natica colliei Recluz. 



Rei LI /. 1'roc. Zo,,l. Soc. Lond. 1843, P- 2 °ö- 



Piiii.iiti. Martini-Chemn. Conch. Cab. Ed. II. Vol. II, Natica, p. 70, PI. 11, fig. 



REEVE. Conch. Ie. Vol. IX. Natica. fig. 112. 



Man. of Conch. Vol. VIII, p. 26, PI. 7, fig. 34. 



Stat. 99. North-Ubian, Sulu-archipel -23 M. Lithothamnion-bottom. 1 Spec. 



15. Natica tniriasensis Recluz. 



ii/. Proc. Zool. Soc. Lond. 1843, p. 212 [buriasiensis). 

 PH1LIPPI. Martini-I hemn. ( onch. I ab Ed. II. Vol. II. Natica, p. 133, PI. is. fig. 17. 

 Rl onch. Ie. Vol. IX. Nat 1 ;8. 



ON. Man. of Conch. Vol. VIII, p. 29, PI. 8, fig. 58. 



102 



