151 
(June 1912) 10 more species were added to the list, viz. 1 by BorrapatLe! (L. maldivensis, 
1903), 1 by GruveL’ (B. carenatus, 1907), 1 by Kricrr® (B. poecelotheca, 1911) and 7 by 
Pitspry * (B. agutla, B. Evermanni, B. flos and B. orcutti 1907; B. peruvianus, 1909; 
B. callistoderma and &. hoekianus, 1911). The number of living species known and described 
at present would thus amount to 59. It is proposed in the present report, to include in a 
new genus 4 of the species which hitherto were considered to belong to the genus Balanus: 
2 of Hoex’s species of 1883 (B. corolliformis and B. hirsutus) and 2 of Prspry’s species 
of 1911 (B. callistoderma and £8. hockianus). The number of species of Balanus would 
therefore be reduced to 55. But, since I have now to propose for this genus 16 new species, 
the total number of known species would at present amount to 7r. 
According to his Monograph, Darwin (1854) knew 9 species of Ba/anus, as occurring 
in the Malay Archipelago. The Challenger (1883) collected in this region two new species of 
this genus, so that in all 11 species were known from it. The dredgings carried out during the 
cruise of the Siboga produced specimens of 26 species of the genus Ba/anus. Of these 16 
must be considered — as I have already said — as new to science; of the remaining 10, 
6 have already been observed in that region, while 4, although known species, are stated 
for the first time here to occur in the said region: the total number of species known to 
occur there would thus amount to 31. 
I here give a complete list of the species of a/anus hitherto collected in the 6 province 
which I proposed for the distribution of the Cirripedia, and which includes the Malay Archipelago 
and the eastern coasts of India. The names are given in alphabetical order. Those with an 
asterisk are species which, according to Darwin, are found in this region, but which are not 
represented in the Siboga-collections. Those with a + are species already known for other regions, 
but which were collected in the Malay Archipelago by the Siboga for the first time. 
AB. GijGHe WENA og 5 6 oo 6 Philippine Archipelago, attached to Milleporae. Shallow water. 
1B, CURDS Wy BC. ox oo oe || Sblle SEAE Sein oye : 564 m. 
Di, GUS We FUSE oo OE BaliSea: Stat.12; KeiIslands: Stat. 260; (?SuluSea: Stat.gs) | 90, 289 (? and 522 m.) 
B. amaryllis Darwin . . . | Different places: Stat. 50, 258, Jedan Islands. Also India: I13—40 m. 
Mouth of the Indus, Moreton Bay and N.E. coast 
of Australia. 
B. amphitrite Darwin. . . | Several places throughout the Archipelago. Extremely o—56 m. 
common outside the Archipelago, e.g. Mouth of the 
Indus, Ceylon, Australia, etc. 
B. arcuatus n. spec. .. . | Banda. 9—36 m. 
B. auricoma n. spec. . . . | Ternate: Stat. 136; (? Kei Islands: Stat. 260). 27 (and ?go m.). 
1 BorRADAILE, L. A., Marine Crustaceans (of the Maldive and Laccadive Archipelagoes). The Fauna and Geography of the 
Mald. and Lacc. Archipel. Part. IV—VII. VII. The Barnacles. 1903. 
2 GRUVEL, A., Cirrhipédes operculés de l’Indian Muséum de Calcutta. Mém. Asiatic Soc. Bengal. Il. 1907. p. 1—10. 2 pl. 
3 KriGer, Pau, Beitrage zur Cirripedienfauna Ostasiens. Abhandl. d. math.-phys. Kl. d. Bayer. Akad. d. Wisschensch. II. 
Suppl. Bd. 6. Abhandl. rg11. 72 S. 4 Taf. 
+ Pirspry, Henry A., Cirripedia from the Pacific coast of North America. Bulletin of the Bureau of Fisheries. Washington. 
XXVI. 1907. 
——, Report on Barnacles of Peru, collected by R. S. Coker and Others. Proceed. U.S. Nat. Museum. XXXVII. 1909. 12 p. 4 pl. 
——, Barnacles of Japan and Bering Sea. Bulletin of the Bureau of Fisheries. Washington. XXIX. (1909). 26 p. Io pl. 1911. 
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