. The crayfish; an introduction to the study of zoology. Crayfish; Zoology. 6 THE NATURAL HISTORY OF THE COMMON CRAYFISH. general hue may be red or blue. These are " cra}'- fishes," and they cannot possibly be mistaken for any other inhabitants of our fresh Fig. 1.—Astaciis fluvialilis.— Side view of a male specimen Cnat. size): — hg, brancliiostegite ; eg, cervical groove ; r, rostrum ; t, telson.— 1, ej^e-stalk ; 2, antennule; 3, antenna ; 9, external maxillipede ; 10, forceps; 14, last ambulatory leg; 17, third abdominal ap- pendage ; 20, lateral lobe of the tail-fin, or
. The crayfish; an introduction to the study of zoology. Crayfish; Zoology. 6 THE NATURAL HISTORY OF THE COMMON CRAYFISH. general hue may be red or blue. These are " cra}'- fishes," and they cannot possibly be mistaken for any other inhabitants of our fresh Fig. 1.—Astaciis fluvialilis.— Side view of a male specimen Cnat. size): — hg, brancliiostegite ; eg, cervical groove ; r, rostrum ; t, telson.— 1, ej^e-stalk ; 2, antennule; 3, antenna ; 9, external maxillipede ; 10, forceps; 14, last ambulatory leg; 17, third abdominal ap- pendage ; 20, lateral lobe of the tail-fin, or sixth abdominal appendage ; xv, the first ; and XX, the last abdominal somite. In this and in succeeding figures the numbers of the somites are given in Roman, those of the appendages in ordinary numerals. The animals may be seen walking along the bottom of the shallow waters which they prefer, by means of four pairs of jointed legs (fig. 1); but, if alarmed, the}" swim. 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 Huxley, Thomas Henry, 1825-1895. New York, D. Appleton and company
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Keywords: ., bookauthorhu, bookcentury1800, bookdecade1880, booksubjectzoology
