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V. Stat. 162. August 18, 1899. Between Loslos and Broken-islands, at the Westcoast of Salawatti. 



Bottom coarse and fine sand with clay and shells. Depth 18 m. 



Numerous smaller and somewhat larger specimens attached to the shells of a species 

 of AviculaQ), or small sterns of doubtful nature. Several specimens are crowded together and 

 attached to one another. They are mostly small specimens, the larger ones having a basis the 

 length of which does not exceed 6 mm. They are more cubic than conical, the orifice being 

 large and not distinctly toothed. Some of the specimens have the surface covered with Bryozoa 

 (a Flustra-Mke species), others with a thick coat of a white feit of a nature quite unknown to 

 me. The colour is different even in specimens attached to the same shell or stem : white, pale 

 red, or darker, as a rule with longitudinal stripes of a somewhat darker colour, very often 

 crossed by horizontal lines of darker reddish spots. The radii are coloured white, or pale 

 reddish or darkish-purple; their summits are oblique. 



Scutum with rather indistinct growth-ridges, and the adductor ridge only very 

 feebly-developed. 



Ter gum with the spur broad and short and the extremity pointed, though not acutely. 

 The crests for the depressor muscles not prominent and, on the outer surface, hardly a tracé 

 of a longitudinal furrow. 



This variety in many respects corresponds to that from III ö, Station Makassar. They 

 probably do not differ much from Darwin's var. (8) variegatus. Yet in the Siboga-specimens, 

 the shell cannot be said to be conical, nor the walls very thin ; and as the resemblance to 

 the forms from various other localities is great, I prefer'to group them and to consider them as 

 a new variety. 



VI. Stat. 164. August 20, 1S99. Lat. i°42'.5S. Long. I30°47'.5E.; Depth 32 m. Bottom sand, 



small stones and shells. 



About two dozen specimens, some attached to the shell of Avicula (?), some to small 

 sterns of a different nature. Numerous specimens are totally covered by a species of a Polyzoon 

 (somewhat like Flustra). The specimens attached to the sterns are flattened laterally, and surround 

 the stem with their strongly curved basis. The longest diameter of one of the largest specimens 

 is about 1 cm. The colours of the various specimens are very different, like in those from III ö, 

 Makassar and V, Station 162. In some of the specimens the shell is more cylindrical with large 

 orifice, in others more conical. Walls apparently robust rather than thin. 



Scutum with the growth-ridges not prominent, and hardly a tracé of beads or longitudinal 

 striae. Adductor ridge long and well-developed. 



Tergum with the extremity of the spur obtusely pointed or rounded off. Longitudinal 

 furrow indicated. Crests for depressor muscles rather prominent. 



These specimens in the main correspond to those from Station 162, and those from 

 Makassar. 



VII. Stat. 273. December 23/26, 1S99. Anchorage of Pulu Jedan, East coast of Aru-Islands 



(Pearlbanks). Depth 13 m., Bottom sand and shells. 



The specimens are attached to small sticks, to one another, and to the shell of an 



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