. The Cambridge natural history. Zoology. Fig. 322.—Restored outline of Pterichthys milleri. The upper figure represents a dorsal view, and the lower a lateral view. The dotted lines indicate the course of the lateral line system, , Antero - dorso - lateral; ag, angular; , anterior median dorsal ; , anterior ventro-lateral ; , extra-lateral or operculum ; I, lateral; I. occ, lateral occipital ; m, median or interorbital plate ; , median occipital ; o, orbit ; , posterior dorso-lateral ; , pre-median ; 2}, posterior median dorsal ; ^«.m, post - median ; '
. The Cambridge natural history. Zoology. Fig. 322.—Restored outline of Pterichthys milleri. The upper figure represents a dorsal view, and the lower a lateral view. The dotted lines indicate the course of the lateral line system, , Antero - dorso - lateral; ag, angular; , anterior median dorsal ; , anterior ventro-lateral ; , extra-lateral or operculum ; I, lateral; I. occ, lateral occipital ; m, median or interorbital plate ; , median occipital ; o, orbit ; , posterior dorso-lateral ; , pre-median ; 2}, posterior median dorsal ; ^«.m, post - median ; '.Z, posterior ventro-lateral. , Plates investing the limbs : c, central; , dorsal anconeal ; , dorsal articular ; , external marginal; , internal marginal; , marginals; i, terminal. (Prom Traquair.) lacunae (Fig. 'S22)} The orbits are close together, near the middle of the dorsal surface, and between them there is a small median interorbital plate, with a deep pit on its inner surface, possibly for a parietal organ. A small lateral plate (), evidently free behind, suggests the presence of an operculum. Nothing is certainly known about the jaws or the nostrils. The mouth is situated just behind the anterior margin of the cephalic shield on the ventral surface, and in front of it there are two plates, 1 Traquair, Ann. Nat. Hist. (6), ii. 1888, p. 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 Harmer, S. F. (Sidney Frederic), Sir, 1862- ed; Shipley, A. E. (Arthur Everett), Sir, 1861-1927. ed. [London, Macmillan and Co. , Limited; New York, The Macmillan Company
Size: 2792px × 895px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
