. Elements of zoölogy : a textbook. Zoology. VERTEBRATA: PISCES OR FISHES. SUB-SECTION IV. THE ORDER OF PROTOPTERI OK LEPIDOSIRENS. THE scientific name of this order comes from two Greek words, protos, first, andpteron, a wing or fin, and is given to fishes of this order because they have fins only in a rudimentary condition. They are called Lepidosirens. Protopterus or Lepidosireii or Mud-fish. or Scaly Sirens from their resemblance to the batrachians of the latter name, already noticed on page 242—the first part of the word coming from the Greek lepis, lepidos, a scale. This order is also ca
. Elements of zoölogy : a textbook. Zoology. VERTEBRATA: PISCES OR FISHES. SUB-SECTION IV. THE ORDER OF PROTOPTERI OK LEPIDOSIRENS. THE scientific name of this order comes from two Greek words, protos, first, andpteron, a wing or fin, and is given to fishes of this order because they have fins only in a rudimentary condition. They are called Lepidosirens. Protopterus or Lepidosireii or Mud-fish. or Scaly Sirens from their resemblance to the batrachians of the latter name, already noticed on page 242—the first part of the word coming from the Greek lepis, lepidos, a scale. This order is also called Dipnoi, from the Greek dis, two, and pnce, breath, in allusion to the fact that the Lepi- dosirens are provided with two sets of respiratory organs —both gills and lungs. The Lepidosirens are from one to three feet long, are covered with scales, and are found in the tropical regions of America and Africa. By some writers they have been referred to the Batrachians or 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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