. The biology of the amphibia. Amphibians. RELATIONSHIPS AND CLASSIFICATION 533 vomers are very similar in the two forms. In Glyphoglossus the prevomers are studded with two or three bony swellings of which the posterior mesial ones form a pair of rounded projections. In Cacopus these same processes are present but longer and pointed. In life they are covered with pigmented mucosa. The palates are otherwise identical in the two genera. The chief difference between Glyphoglossus and Cacopus lies in the tongue, which is modified in the former as in Colpoglossus except that the pocket extends for
. The biology of the amphibia. Amphibians. RELATIONSHIPS AND CLASSIFICATION 533 vomers are very similar in the two forms. In Glyphoglossus the prevomers are studded with two or three bony swellings of which the posterior mesial ones form a pair of rounded projections. In Cacopus these same processes are present but longer and pointed. In life they are covered with pigmented mucosa. The palates are otherwise identical in the two genera. The chief difference between Glyphoglossus and Cacopus lies in the tongue, which is modified in the former as in Colpoglossus except that the pocket extends forward as a median groove or fold to the anterior part of the tongue. As already pointed out, this is a modification which has cropped up many times in the Fig. 174.—Head of Glyphoglossus molossus, showing the grooved tongue charac- teristic of various brevicipitids. The remaining genera of Cacopinae seem very closely related. The widespread Phrynomantis (Hylophorbus of authors) appears to be the central type. It ranges from the Philippines to New Guinea and Australia. It has a crenulated ridge across the posterior margins of the large prevomers. The usual soft ridges across the back of the roof of the mouth are present. It has digital dilations, T-shaped terminal phalanges, but no webs. Copiula of New Guinea differs from Phrynomantis in its slightly more pointed head and in lacking the anterior of the two soft- palatal ridges. This is hardly a generic difference in view of the extreme variability of the ridge in many other brevicipitids. Cophixalus, of New Guinea, has a palate similar to Copiula but its toes are slightly webbed. Here, again, the question is raised of whether this can be considered a generic difference. Both genera are represented by only a single species (possibly two in Copiula). If these forms were not rare species coming from a. Please note that these images are extracted from scanned page images that may have been digitally enhanced for re
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