. Elements of zoölogy : a textbook. Zoology. 368 ARTICULATA : CRUSTACEA. ter fishes, and is common on the pickerel, especially on the gills. The two last-named genera belong to the Siphonostoma of authors. And to the Siphonostoma also may be referred the strangely-formed parasites Ler- nea and Lerneonema (Fig. 501), etc., formerly described under the name of Epizoa. The OSTRACODA (Cypr-iS) etc.) have no branchiae, nor any modification of limbs to serve for branchiae—so far as is apparent; the body does not exhibit distinct segments, and is wholly inclosed in a bivalve shell. The name is from t
. Elements of zoölogy : a textbook. Zoology. 368 ARTICULATA : CRUSTACEA. ter fishes, and is common on the pickerel, especially on the gills. The two last-named genera belong to the Siphonostoma of authors. And to the Siphonostoma also may be referred the strangely-formed parasites Ler- nea and Lerneonema (Fig. 501), etc., formerly described under the name of Epizoa. The OSTRACODA (Cypr-iS) etc.) have no branchiae, nor any modification of limbs to serve for branchiae—so far as is apparent; the body does not exhibit distinct segments, and is wholly inclosed in a bivalve shell. The name is from the Greek ostrakon, a shell. Cypris is very minutej and abounds in ponds and pools. Fossil shells of extinct FIG. 503. FIG. 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 Tenney, Sanborn, 1827-1877. New York : Scribner
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