. Zoology for high schools and colleges. Zoology. STRUCTURE OF CRICOIDS. 103 from one hundred to one thousand fathoms in the North Atlantic and Floridan seas, and is a characteristic member of the abyssal fauna. This crinoid' consists of a jointed stalk, a cup-shaped body {calyx), from the edge of which from five to seven (the number varies) arms {brachia) radi- ate, which subdivide into a double alter- nate series of pin- nulm. The mouth is situated in the centre, while the anus is situ- ated on a conical pro- jection on one side of the oral disk, between the bases of two of the arms. R. Kaw-
. Zoology for high schools and colleges. Zoology. STRUCTURE OF CRICOIDS. 103 from one hundred to one thousand fathoms in the North Atlantic and Floridan seas, and is a characteristic member of the abyssal fauna. This crinoid' consists of a jointed stalk, a cup-shaped body {calyx), from the edge of which from five to seven (the number varies) arms {brachia) radi- ate, which subdivide into a double alter- nate series of pin- nulm. The mouth is situated in the centre, while the anus is situ- ated on a conical pro- jection on one side of the oral disk, between the bases of two of the arms. R. Kaw- soni Pourtales occurs in from eighty to one hundred and twenty fathoms at Barba- does. In Holopus, a short, stout form with no true stalk, but at- tached by abroad en- crusting base, there are ten arms originat- ing from five axial joints. " When con- tracted the arms are. Fig. eS.—Bhizocrinuf lofotensis Sars, twice Tiatnral size.—After Wyvilla 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 Packard, A. S. (Alpheus Spring), 1839-1905. New York, H. Holt and Company
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Keywords: ., bookcentury1800, bookdecade1880, bookpublishe, booksubjectzoology
