. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 216 REPORT OF NATIONAL MUSEUM, 1898. colon is generally present, and the caBcum is quite conspicuous in Draco, Stellio^ and Agama {aculeata), and less so but present in Lophura, Galotes, Uromastlr, and PhrynoGephalus. The mesenteries present the usual sheets, hepatoventral, gastrohep- atic, left gastropulmonary, right hepatic, which includes the right lung. I have noted the following modifications: In Agama colonorum the left gastropulmonar
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 216 REPORT OF NATIONAL MUSEUM, 1898. colon is generally present, and the caBcum is quite conspicuous in Draco, Stellio^ and Agama {aculeata), and less so but present in Lophura, Galotes, Uromastlr, and PhrynoGephalus. The mesenteries present the usual sheets, hepatoventral, gastrohep- atic, left gastropulmonary, right hepatic, which includes the right lung. I have noted the following modifications: In Agama colonorum the left gastropulmonary has become a right gastrohepatic by its continuing to the liver, a character observed in Ghamwleon and the Anolinae. There is also in this species a left hepatomarginal. In Megalochilus auritus there is a right hepatoventral, as in Phrynosoma, I have had the opportunity of examining the hemipenes of a rela- tively small number of species of this family. As already remarked, the surface is generally calyculate. I liave not found terminal papillae in the genera Uromastix, Agama, Liolepis, Physignathus, or Galotes. The general construction is, that opposite the sulcus spermaticus is a strong longitudinal welt. IS'ear the apex this welt becomes adherent to the side on which the sulcus runs, dividing the organ into two apical. Fig. 14. iGUANIDiE. CROTAPHYTUS WISLIZENII BaIRD AND GlHARD. portions. The sulcus bifurcates and i^asses along the base of this par- tition. In Liolepis there are two welts inclosing a smooth space between them. In Galotes oristatellus there is a lesser welt on each side of the ])rincipal one. In all the genera the basal part is smooth and it is sometimes thrown into longitudinal folds. Boulenger makes the following general remarks on the Agamidae: The cliief character by Avhich the lizards of this family are at ouce distinguished from their allies is the acrodont dentition. The teeth may usually be divided into three , viz, incisors, canines, and mola
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