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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 Avicula(?), or small stems 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-like species), others with a thick coat of a white felt 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. 
Tergum 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 trace 
of a longitudinal furrow. 
This variety in many respects corresponds to that from III4, Station Makassar. They 
probably do not differ much from Darwin’s var. (8) varzegatus. 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, 1899. Lat. 1° 42'.5S. Long. 130° 47’.5 E.; Depth 32m. Bottom sand, 
small stones and shells. 
About two dozen specimens, some attached to the shell of Avzcaula (?), some to small 
stems of a different nature. Numerous specimens are totally covered by a species of a Polyzoon 
(somewhat like FV/ustra). The specimens attached to the stems 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 4, 
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 trace 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, 1899. 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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