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Show 1876.] ANATOMY OF CHAUNA DERBIANA. 199 TABLE. Name of family. PALAMEDEIDJE ... GALLINAE RALLIDJI OTIDID.E Phoenicopterus ... Serpentarius MUS0PHAGID.E ... PSITTACI ANATIDJE PROCELLARIIDJB STEGANOPODES ... ACCIPITRES STRIGID.E GRUIDAE j LARIDA ' ALCID.E Expansor secundariorum (see p. 193). Ciconine. Ciconine. Present (vide p. 194). Ciconine. Ciconine. Ciconine. Ciconine. Ciconine. Ciconine. Ciconine. Absent. Ciconine in Cyg-nina**, peculiar in others (vide Nopt. se1e9n4.) . Not seen. ? ? Ciconine. Ciconine. Ciconine (not in Cancroma and Egretta). Absent. Absent (not in Falco, Polyborus, and Tinnunculus). Absent. Feeble or absent. Ciconine. Ciconine. In some. Absent. Biceps slip to the patagium (see p. 195). Absent. Absent. Absent only in Cracida*-. Present. Absent. Absent. Present. Absent. Absent. Absent. Absent. Present. Present. Present. ? ? Absent. Absent. Absent. Absent, except in PhalacrocoracidcB. Absent. Absent. Present. Present. Present. Present. Present. Obturator internus (see p. 195). Triangular. Oval. Triangular. Triangular. Oval. Triangular. Oval. Triangular. Triangular. Triangular. Peculiar from elongation of pelvis. Triangular. Oval. ? Oval. Oval. Triangular. Triangular. Oval. Triangular (exc. Neophron). Triangular (not Scops). Oval. Oval. Triangular. Oval. Oval. Postacetabular portion of tensor fascia? (see p. 195). Large. Absent. Large. Large. Present. Present. Present. Absent. Present. Present. Absent. Present, except in Cygninae. Absent. Present. Present. ? Absent. Absent, or extremely small. Present. Absent, or extremely small. Absent. Absent. Absent. Present. Present. Present. Absent. Present (not in Arctica aile?). In conclusion, it seems to m e that from considerations of pterylosis, visceral anatomy, myology, and osteology, the Screamers cannot be placed along with the Anserine birds. In the windpipe and the form of the angle of the jaw they, no doubt, closely approach them. In their alimentary canal they are much nearer to Struthio and Rhea (not Dromaus and Casuarius) than to any other birds. There is a Ciconine tendency in their myology, whilst their osteology points in no special direction. It seems, therefore, to m e that, summing these results, the Screamers must have sprung from the primary |
