. The biology of the amphibia. Amphibians. 286 THE BIOLOGY OF THE AMPHIBIA dark pigment spot in the roof of the cloaca is a female. Some female plethodontids, especially Plethodon, have a small papilla. Fig. 104.—The cloacal orifice of a male (A) and a female (B) salamander, Desmognathus fuscus, showing the villosities which serve to distinguish the males of most species of salamanders from the opposite sex. , abdominal gland; , cloacal roof, region of pelvic gland; V., villosities of the cloacal glands. which projects from the roof of the cloaca, obscuring the view of the spermatheca.

---

. The biology of the amphibia. Amphibians. 286 THE BIOLOGY OF THE AMPHIBIA dark pigment spot in the roof of the cloaca is a female. Some female plethodontids, especially Plethodon, have a small papilla. Fig. 104.—The cloacal orifice of a male (A) and a female (B) salamander, Desmognathus fuscus, showing the villosities which serve to distinguish the males of most species of salamanders from the opposite sex. , abdominal gland; , cloacal roof, region of pelvic gland; V., villosities of the cloacal glands. which projects from the roof of the cloaca, obscuring the view of the spermatheca. Males are identifiable not only by their papil- lose cloacas but by their secondary sexual characters. There. 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 Noble, Gladwyn Kingsley, 1894-1940. New York : McGraw-Hill

---

Size: 1232px × 2028px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookpublishernewyorkmcgr, booksubjectamphibians