200 



TH1ELE. Beschalte Gastrop. d. deutschen Tiefsee-Exp. [898 99, p. [65, PI. 8, fig. 46. 

 Mi 1 vin. Proc. Mal. S I nd. VII, 1906, p. Bi. 

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



St.u. 12. ;■ 15 S. [15 i;.'.K. Madura Sea. 289 M. Mud. and broken shells. Many specimens. 

 Stal 5 N.. ii" i' E. Sulu Sea. 5JJ M. Stony bottom. 19 Spec. 



St.u. 1 \.. 121 19 E. Sulu Sea. -.75 M. Coralbottom. 1 Spec. 



1 1 S.. 1 - 1 . Molucca-Pi M. Mud, stones and coral. 16 Spec. 



5 S.. [30 47..; E. Halmahera Sea. 32 M. Sand, small stones and shells. 1 Spec. 

 Stat. ,. Between Wowoni and Hut. ui. 75—94 M. Sand with dead shells. 2 Spec. 



The specimens from Stat. 12 are so numerous and often form small colonies, that it is 

 rly impossible to count them; the majority from Stat. 12 lias been dredged alive 

 on Xenophora pallidula Rve, on a dead Murex 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 1 had sent this 

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

 from Stat. 204, which are dead shells, are from not more than 94 M. Dr. Tim 1 1 (1. c.) was 

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

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

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

 that of Atnalthea. M11 viu. (1. c.) has erected the subgenus Malluvium for this smooth species 

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

 as I could see in loosened ones. 



Mitrularia Schumacher. 



1. Mitrularia equestris Linné. 



LlNNÉ. Syst. Xat. Ed. XII, p. 1257. 



Ki.evi:. Conch. Ie. Vol. XI. Calyptraea, fig. 1. 



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



Stat. 240. Banda. 9 — 45 M. Black sand, coral. 1 Spec. 



var. tortilis Reeve. 



R] EVE. Conch. Ie. Vol. XI, Calyptraea, fig. 2 />. 



TRYON. Man. of Conch. Vol. VIII. p. 13S, PI. 42, fig. 53. 



Stat. 225. South Lucipara-island. Reef. 1 Spec. 



var. cicatricosa Reeve. 



Reeve. Conch. Ie. Vol. XI. Calyptraea, fig. ja. 

 TRYON. Man. of (Onch. Vol. VIII, p. 13S. l'l. 42, fig. 



Stat. 59. Western entrance of Samau-strait. 390 M. Coarse coralsand with small stones. 1 Spec. 

 Stat. 114. Kwandang-bay-entrance, North Celebes. 75 M. Hard sand, very fine. 1 Spec. 

 \. Nalahia-bay, Nusa-Laut-island. Reet'. 2 Spec. 



92 



