B. CIRRIPEDIA SESSILIA 
Genus Verruca Schumacher 
Of this genus GRuvEL, in 1905, knew 25 species, a very considerable number when we 
consider that, in 1883, before my Report on the Challenger Cirripedia was published, only 
four species were known. 
5 
and 6 
pelago 
bution 
lenger” 
The deep-sea exploration, however, added largely to that number: 
new species were collected by the ‘Challenger’ (HorxK?), 
new species were collected during the cruises of the “ Hirondelle” and * Alice’’ (AurtviLitus’), 
new species were collected by the “Travailleur’ and the “Talisman” (Gruve-®). 
The richness in species of this deep-sea genus seems by no means exhausted ; according 
results of the dredgings published of late: 
new species were collected by the “Investigator” (GrRuvEL 4), 
new species was collected by the “Belgica” (Hoek), 
new species were collected by the ‘Albatross’ (Pirspry °) 
new species were collected by H.M. “Siboga”’ (Horx) which will be described in this Report. 
This augmentation has been especially important for the sixth province (Indian Archi- 
and Eastern coasts of India), as proposed by me (l.c. p. 33) for the geographical distri- 
of the Cirripedia. Only one species of Verruca (Verruca nitida, collected by the “Chal- 
to the South of Mindanao) was known from that region in 1883 and thisnumber has been 
increased to eleven by the 4 species collected by the “Investigator’’ and 6 by the “Siboga”. 
All these species were taken from deep water, as can best be seen from the following 
table, in which they have been placed according to the depth at which they were found: 
Verruca mutlticostata Gruvel, Strait Malacca, 160 m. 
Verruca plana Gruvel, Andaman Islands, 380—465 m. 
Verruca Koehlert Gruvel, Andaman Islands, 435 m. 
Bull. Soc. 
1 Horx, P. P. C., Cirripedia of the Challenger Expedition. 1883. 
2 AURIVILLIUS, CARL W. 5S., Cirrhipédes nouveaux provenant des campagnes scientifiques de S. A. S. le Prince de Monaco. 
Zool. de France, XXIII. 1898. p. 189—198. 
3 GRUVEL, A., Cirrhipédes des Expéditions scientifiques du “Travailleur” et du “Talisman”. 1902. 
* GruvEL, A., Cirrhipédes operculés de I’Indian Museum de Calcutta. Mém. Asiatic Soc. Bengal, II. 1907. p. 1—10, pl. I—II. 
5 HorK, P. P. C., Cirripedia. Résult. Voyage Belgica. Zool. 1907. p. I—9. 4 fig. 
6 PirsBry, H. A., The Barnacles in the U. S. National Museum. Bulletin 60 of U. S. National Museum. 1907. 
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