175 
inter alia Ceylon, the Philippine Archipelago, the East Indian Archipelago, the east coast of 
Australia and New Zealand. Var. (1) communis occurs in the Philippine Archipelago, and in 
New South Wales; var. (2) vemwstws in Ceylon; var. (7) odscurus in Australia; var. (8) varcegatus 
in New Zealand; var. 9 cirvatws 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) cvradus from British Burma, Saygon and East India (or China). ANNANDALE 
(Cirripedia, Pearl Oyster Fisheries, Gulf of Manaar) observed specimens of the var. (1) communts 
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) malayensis, 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 Balanus. 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 stems, various shells, etc. and these objects were dredged in water of depths varying 
from 13 to 4o m. 5 
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. amphitrite. 
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° 7’.5 N., Long. 120° 26’ E.; Depth 16—23 m. Lithothamnium- 
bottom. (Anchorage off North-Ubian). 
3. Balanus alatus n. sp. Pl. 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 */, 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 Badanus was collected in deep water. It is represented by two specimens, 
the larger of which is figured (Pl. 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 
47 
