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DESCRIPTIONS OF PLATE XII. 



Fig. 1 . Melicerta ringens, protruded and fully expanded ; with the upper part of its 

 tube. Magnified 300 diameters. 

 c. One of the respiratory (?) tubes. 

 e e. The occipital petals of the disk. 

 //. The frontal petals. 

 g. The pellet-cup. 

 h. The gizzard and intestine, as these viscera appear after the animal has 



been fed upon carmine. 

 j. The frontal sinus. 

 Fig. 2. The same unexpanded, viewed laterally. Magnified 300 diameters, 

 o. The tube, formed of pellets. 

 b. The occipital spines. 

 e. The respiratory (?) or antennal processes. 

 Fig. 3. Limnias Ceralophylli (magnified 300 diameters), introduced to show the form of 

 i. The projecting chin ; and 

 k. The horizontal face. 

 Fig. 4. Melicerta ringens, partially expanded, viewed in front, with the whole tube 

 shown. This is much less magnified. In the first three figures the 

 lower part of the tube is not drawn. 



