• Volume 28, Issue 5

      November 1948,   pages  151-176

    • Studies on the anatomy of the tail in Sauria and Rhynchocephalia - II.Chameleon zeylanicus Laurenti

      Syed Muzammil Ali

      More Details Abstract Fulltext PDF

      Theprehensile type of tail, found in the familyChameleonidœ, is adapted for grasping supports by coiling and uncoiling in a dorso-ventral direction. It has the following features.

      1. The scales are arranged in an annular manner, the transverse rows of the dorsal side exceeding those of the ventral.

      2. The ventral epithelium differs from the dorsal in being thicker and stronger and in being provided with peg-shaped spines.

      3. The vertebral column is displaced gradually upwards as it proceeds posteriorly. The pre- and post-zygapophyses are extremely well developed, the latter fitting not over, but in between the former so that the lateral movements of the tail are restricted. The inter-vertebral foramina are large. The transverse processes which arise from the ventral part of the centrum are short and broad, lie at the middle of the vertebra and face outwards and downwards. The neural spine is a prominent structure confined almost completely to the posterior part of the vertebral roof. The anterior face of the centrum has its lower border much shorter than the upper and lateral ones.

      4. The caudal musculature, which has been described in detail, consists of longitudinally extended muscles, overlaid by numerous tendons of varying form and length.

    • A survey of the fisheries of the Tungabhadra River

      P I Chacko G K Kuriyan

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      A survey of the fluvial fisheries of the Tungabhadra River with special reference to the breeding and nursery areas of the major food fishes has been conducted. Sixty-seven species of fishes have been found by the authors, of which nineteen are new records. Breeding and food-habits of the more important fishes have been observed.

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