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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 edition. Excerpt: about 3 scales. Interorbitals slightly convex. Frontal fontanel not narrower than the parietal, equal to the parietals without the occipital groove. Second suborbitals leaving a narrow naked margin behind and below. Snout rather short; mouth large. Maxillary slightly less than the eye. Mandible very little longer than the eye, about 2.33 in the head. Premaxillary with five, 3-to 5-pointed teeth in the inner row, and two to four smaller, 3-to 4-pointed teeth in the outer row. Maxillary with two or three small tricuspid or conical teeth. Dentary with a graduated series of four large 5pointed teeth, followed by nine or ten minute tricuspid and conical teeth. Gill-rakers 6 + 11. Anal sheath of about 13 scales, the first 7 extending over the bases of the first 11 anal rays, the remaining 5 or 6 quite small and inserted between the scales above the anal, but not touching the anal rays. Caudal scaled over the basal one third. Pores developed on 6 to 8 scales. Origin of the dorsal half the length of the eye nearer the caudal than the snout, the penultimate ray one third of the longest, which is 3 + in the length. Origin of the anal on the vertical from the middle or last dorsal ray. Anal emarginate, the longest ray 1.33 to 1.5 in the length of the base. Caudal less than the width of the eye longer than the head. Ventrals on the vertical from the second scale in front of dorsal; ventrals reaching to second or third anal ray. Pectorals reaching a little beyond the base of ventrals. Humeral spot distinct, vertically elongate, paralleled in front and behind by a bright bar nearly as wide as the humeral spot itself; a secondary, fainter, dark bar behind the posterior bright bar. A black (brown in very old alcoholic specimens) caudal spot not...
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Product details

  • Paperback | 118 pages
  • 189 x 246 x 6mm | 227g
  • United States
  • English
  • black & white illustrations
  • 1236745841
  • 9781236745842