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inter alia Ceylon, the Philippine Archipelago, the East Indian Archipelago, the east coast of 

 Australia and New Zealand. Var. (i) communis occurs in the Philippine Archipelago, and in 

 New South Wales; var. (2) vernist us in Ceylon; var. (7) obscurus in Australia; var. (8) variegatus 

 in New Zealand; var. 9 cirratus Mouth of Indus, Australia, Philippine Archipelago. Weltner, 

 (Verzeichniss, 1897) reports that the Berlin Museum possesses specimens of the species itself 

 from Burma, from Singapore, and from Manila; and in the same Museum the var. (1) communis 

 is represented by specimens from Singapore, from Manila, from Makassar, and from Surabaya, 

 and the var. (9) cirratus from British Burma, Saygon and East India (or China). Annaxdale 

 (Cirripedia, Pearl Oyster Fisheries, Gulf of Manaar) observed specimens of the var. (1) communis 

 and (2) venustus, on shells, ropes, and submerged baskets at Galle and in the Gulf of Manaar. 

 Hence the variety (1) communis appears to be rather common in this part of the Pacific, and the 

 new variety (10) malaycnsis, seems also to be fairly general. The species itself is found in 

 shallow water, often attached to floating objects, ships-bottoms, etc. The Siboga collected it on 

 different occasions, during shore-exploration, as well as when dredging. The most typical specimens 

 of the var. (1) communis were taken from a piece of floating Bambusa; other specimens were 

 taken from a piece of wood, which was perforated to a considerable extent by the tunnels of 

 Teredo, and, perhaps, in floating condition only was occupied by the Ba/anus. The small 

 specimens collected at Station 2, which show resemblance to the variety communis, were 

 dredged at a depth of 56 m. The specimens of the var. (10) malayensis were found attached 

 to small sterns, various shells, etc. and these objects were dredged in water of depths varying 

 from 13 to 40 m. 



General Remarks. Two specimens of a Balanus were collected at Station 99, which, 

 probably, belong also to this species ; the smaller specimen only was furnished with opercular 

 valves and these, though very small, look very much like the same valves of B. ampJiitrite. 

 The other specimen is somewhat larger, is pink coloured, longitudinally striped with red, and 

 its general appearance is much like that of the species here under consideration. 



These specimens were collected at : 



Stat. 99. June 28 — 30, 1899. Lat. 6° f.$ N., Long. 120° 26' E.; Depth 16 — 23 m. Lithothamnium- 

 bottom. (Anchorage off North-Ubian). 



3. Ba/anus alatus n. sp. PI. XV, fig. 1 — 8. 



Shell coloured red with darker red stripes ; radii broad with the summits oblique and 

 slightly hollowed out. Scutum with the external surface hollowed out in the middle, no adductor 

 ridge, and an articular ridge extending over "~J S of the length of the tergal margin. Tergum 

 with broad articular furrow, and the extremity of the spur bluntly pointed. Labrum with four 

 teeth on each side of the notch ; the hairs on the outer surface of the palpi limited down- 

 wards by a distinct row, making a sharp angle with the inferior margin. 



This beautiful Balanus was collected in deep water. It is represented by two specimens, 

 the larger of which is figured (PI. XV, fig. 1). It is of conical shape, and has a relatively 

 large orifice. The carino-lateralia are narrow, the lateralia triangular, and very broad towards 



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