. The Cirripedia of the Siboga-expedition. Cirripedia. the tergum between the specimens from the different stations, there could be no doubt that they belonged to the same species. The shell is white and covered by a greyish membrane with a velvety surface. This membrane is quite persistent round the basal part of the shell, the surface round the orifice being almost quite bare. The orifice is large, of a pentagonal shape; it is toothed in consequence of the oblique summits of the alae. This is more distinctly the case in the specimen of cylin- drical shape from Station 105. The oblique summit
. The Cirripedia of the Siboga-expedition. Cirripedia. the tergum between the specimens from the different stations, there could be no doubt that they belonged to the same species. The shell is white and covered by a greyish membrane with a velvety surface. This membrane is quite persistent round the basal part of the shell, the surface round the orifice being almost quite bare. The orifice is large, of a pentagonal shape; it is toothed in consequence of the oblique summits of the alae. This is more distinctly the case in the specimen of cylin- drical shape from Station 105. The oblique summits of the alae are delicately crenated, their surface is horizontally striated. The carina and the carino-lateral compartment have the alae, in the cylindrical specimen especially, very broad at the summit. The ala of the lateral compartment is also of a triangular shape, but it is much narrower in the upper part. The rostrum has neither radii nor alae; it is of a triangular shape, bluntly pointed at the tip, broad at the basis and very broad in the specimens from Stations 59 and 251. The outer surface of all the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hoek, Paulus Peronius Cato, 1851-1914. Leyden, E. J. Brill
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherleyde, bookyear1913
