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Show 1885.] TROCHILTDE, CAPRIMULGIDE, AND CYPSELID E. 899 Fig. J). Fig. E. Prrux Fig. F. Fig. D. Under view of the skull of Panyptila saratilis (X2). (Drawn by the author from a specimen in his own cabinet.) Fig. E. Under view of the anterior portion of the skull of Cypselus apus {X 2). (after Huxley). Fig. F. Under view of the skull of Tachycincta thalassina {x 2). (Drawn by the author.) Pmx, premaxillary ; Mxp, maxillo-palatine ; Vo, vomer ; Na, nasal ; PI, palatine ; Pt, pterygoid. In figure E the anterior excavated end of the vomer has a crescentic shape, its angles terminating in free horns above tne palatine bones by which they are concealed in the fignre. The * directs attention to the inferior portions of the antorbitals. They have a very peculiar form in C. apus, as shown in fig. E. |