200 



Thiele. Beschalte Gastrop. d. deutschen Tiefsee-Exp. 1898 — 99, p. 165, PI. 8, fig. 46. 

 Melvill. Proc. Mai. Soc. Lond. VII, 1906, p. Si. 

 Smith. Proc. Mai. Soc. Lond. VII. 1906, p. 122. 



Stat. 12. 7°i5'S., 1 15° 1 5'. 6 E. Madura Sea. 289 M. Mud, and broken shells. Many specimens. 



Stat. 95. 5°43'.5 N., ii9°4o'E. Sulu Sea. 522 M. Stony bottom. 19 Spec. 



Stat. 105. 6°8'N., 121° 19' E. Sulu Sea. 275 M. Coralbottom. i Spec. 



Stat. 139. o°n'S., I27°25'E. Molucca-Passage. 397 M. Mud, stones and coral. 16 Spec. 



Stat. 164. i°42'.5 S., 1 30° 47'. 5 E. Halmahera Sea. 32 M. Sand, small stones and shells, i Spec. 



Stat. 204. Between Wowoni and Buton. 75 — 94 M. Sand with dead shells. 2 Spec. 



The specimens from Stat. 1 2 are so numerous and often form small colonies, that it is 

 useless and nearly impossible to count them ; the majority from Stat. 1 2 has been dredged alive 

 on Xenophora pallidida Rve, on a dead Mtirex belonging to or allied to M. ternispina Lam., 

 other specimens from the same locality live on stones or fragments of very diversified shells ; those 

 from Stat. 95 and 105 are dead shells, those from Stat. 139 are affixed on a dead Xenophora and 

 a young dead Rostellaria. The specimen from Stat. 164, which should have lived at a depth 

 of 32 M. is very flat and broad, but the sculpture, consisting of more or less irregular growth- 

 striae, and shape of spire agree with typical specimens. Mr. Smith to whom I had sent this 

 doubtful specimen, pronounced it to be: "probably a dilated variety of A. lissa\ the specimens 

 from Stat. 204, which are dead shells, are from not more than 94 M. Dr. Thiele (I.e.) was 

 the first to state that the species, according to its anatomy belongs to Hipponyx = Amalthea. 

 Afterwards Melvill (1. c.) came to the same conclusion on other grounds, and Smith (Proc. 

 Mai. Soc. Lond. VII, p. 122) states in a note that Prof. Gwatkin found the radula nearest 

 that of Amalihea. Melvill (1. c.) has erected the subgenus Malluvium for this smooth species 

 of Amalthea. The Siboga-specimens have no brown colour in the interior of the shells, as far 

 as I could see in loosened ones. 



Mitrularia Schumacher. 



I. Mitrularia equestris Linne. 



LiNNE. Syst. Nat. Ed. XII, p. 1257. 



Reeve. Conch. Ic. Vol. XI, Calyptraea, fig. i. 



Tryon. Man. of Conch. Vol. VIII, p. 137, PI. 41, fig. 25, 26. 



Stat. 240. Banda. 9 — 45 M. Black sand, coral, i Spec. 



var. tor tills Reeve. 



Reeve. Conch. Ic. Vol. XI, Calyptraea, fig. 2 b. 



Tryon. Man. of Conch. Vol. VIII, p. 138, PI. 42, fig. 53. 



Stat. 225. South Lucipara-island. Reef. I Spec. 



var. cicatricosa Reeve. 



Reeve. Conch. Ic. Vol. XI, Calyptraea, fig. 3 a. 



Tryon. Man. of Conch. Vol. VIII, p. 138, PI. 42, fig. 56. 



Stat. 59. Western entrance of Samau-strait. 390 M, Coarse coralsand with small stones, i Spec. 

 Stat. 114. Kwandang-bay-entrance, North Celebes. 75. M. Hard sand, very fine, i Spec. 

 Stat. 234. Nalahia-bay, Nusa-Laut-island. Reef. 2 Spec. 



92 



