Foutsom. — Development Anurida. 
PLATE 7. 
Fig. 42. Dorsal aspect of completed lingua and superlingue. x 480. 
Fig. 43. Surface view (ventral) of adult labium. X 150. 
Figs. 44-50. Transections of internal mouth-parts of adult to show their relations 
to each other and to the buccal cavity. 
Fig. 44 is the most anterior of the series ; Fig. 50 the most posterior. 
Figs. 44 and 45 are magnified 350 diameters, Figs. 46-50, 480 diameters. 
