. The crayfish : An introd. to the study of zoology. --. Crayfish; Zoology. DISTINCTIVE CHARACTERS OF THE CRAYFISH. 233 spine. The elevation itself may be distinguished as the post-orbital ridge. The flattened surface of this ridge is marked by a longitudinal depression or groove. The ABC. FlG. 01.—A, D, & G,Astacvs torrentium; B, E, & II, A. nolilis; C, F, & I, A. nigrescetis (nat. size). A—C, Dorsal views of carapace; D—F, side views of third abdominal somites ; G—I, Dorsal views of telson. a, b, post-orbital ridge and spines ; cy branchio-cardiac grooves inclosing the P
. The crayfish : An introd. to the study of zoology. --. Crayfish; Zoology. DISTINCTIVE CHARACTERS OF THE CRAYFISH. 233 spine. The elevation itself may be distinguished as the post-orbital ridge. The flattened surface of this ridge is marked by a longitudinal depression or groove. The ABC. FlG. 01.—A, D, & G,Astacvs torrentium; B, E, & II, A. nolilis; C, F, & I, A. nigrescetis (nat. size). A—C, Dorsal views of carapace; D—F, side views of third abdominal somites ; G—I, Dorsal views of telson. a, b, post-orbital ridge and spines ; cy branchio-cardiac grooves inclosing 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 Huxley, Thomas Henry, 1825-1895. London : K. Paul, Trench, Trubner
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1896
