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Avicula (?) ; the last are beautifully coloured, with longitudinal and horizontal stripes of lighter or 

 darker red, with white or somewhat darker interspaces. The radii with their oblique summits 

 are, in almost all the specimens, of a dark purple. The group of specimens attached to a small 

 stem is of a duller colour, brownish, spotted with darker longitudinal and horizontal stripes. 

 The radii in some of these specimens are also dark-coloured. All the specimens are small-sized, 

 the largest diameter of the basis measuring at the most 8 mm. 



Scutum with the growth-ridges not very prominent, and no beads along them ; the 

 adductor ridge in some of the specimens is well-developed, in others much less. 



ïergum with the spur broad and rounded at the extremity. The part of the basal 

 margin between the spur and the basi-scutal angle very short. Crests for the depressor muscles 

 not much developed. 



These specimens also show great resemblance to those of Stations 162 and 164. 



VIII. Merauke (South coast of New Guinea). "Dr. Koch coll. 1904". 



Numerous dry specimens attached to a piece of wood, which to a large extent is 

 destroyed by the holes of a species of Teredo. The shells are (in dry condition) white, have a 

 conical, or, where they stand close together, cylindrical shape, and a rather large rhombiform 

 orifice. The radii are not very broad and have their summits oblique and rounded. The 

 diameter of the largest specimen near the basis is 13 mm., but most specimens are much smaller. 

 These specimens give one the impression of being very strong. 



The scutu m has the growth-ridges not very prominent, the articular ridge half as long 

 as the tergal margin, and the adductor ridge well-developed. There is a shallow triangular pit 

 for the lateral depressor muscle. 



The t e r g u m has a narrow and rather long spur ; that part of the basal margin which 

 lies between the spur and the basi-scutal angle is long. The crests for the depressor muscles 

 are moderately developed. 



IX. Batavia. Upon bambusa from Sero. "Dr. VAN KAMPEN misit 1908". 



Numerous specimens, most of them white, with pale or dark violet or bluish-grey coloured 

 longitudinal stripes, crossed by lighter horizontal bands. Shell strong, fiat conical with the radii 

 narrow and their summits very oblique, coloured greyish, with delicate slightly darker horizontal 

 lines. Orifice pentagonal, nearly entire. 



The scutum has broad, distinct, but not very prominent growth-ridges, the articular 

 ridge very strongly developed, half as long as the tergal margin, almost hook-shaped. The 

 adductor ridge remarkably prominent. 



The tergum has the spur rather long and narrow, not pointed, but truncated at the 

 extremity ; no longitudinal furrow, and very well-developed crests for the depressor muscles. 



This form shows great resemblance to Darwin's var. (1) communis, as figured in his 

 Monograph PI. V, fig. 2 e. 



The foregoing are the 9(11) samples of specimens that had to be dealt with. After 



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