PLATE XVI. 
Fig. 1. The male form of Umbonia nig rat a , page 84. Formerly named Pkysoplia 
nig rata, by Walker. Canon Fowler considers that all these last-named insects, 
with the erect truncated processes; are varieties of Umbonia orozimbo. 
Fig. 2. The male form of Umbonia crassicornis, page 84. Notwithstanding the 
different form and the great size of this-insect, Fowler for good reasons thinks 
this, like the last, is a variety of Umbonia orozimbo. 
Fig. 2a. The front view of the frons, and part of the metopidium. The dorsal process 
is not drawn. 
Fig. 8. Umbonia media or Pkysoplia media of Walker, page 85. A.fine green variety 
drawn from my own collection. Also, according to Stal, this is the male of 
U. orozimbo. 
Fig. 3 a. The underside of the last abdominal rings showing the male characters of 
the insect. 
Fig. 4. The female form of Umbonia orozimbo, page 86. The strong dorsal spine 
with its red point well represents or counterfeits the protective thorn of some 
prickly shrub. 
Fig. 4 a. Umbonia orozimbo, page 86. A remarkable female variety. 
Fig. 4 /a The front view of the same insect. 
Fig. 5. Umboniapicta, page 86. 
Fig. 5b. The head, supra-humeral process, and spine seen from the front. 
Fig. 6. Umbonia spinosa , page 87. The expanded imago. 
Fig. Qa. The front view of the insect. 
Fig. 5a. The neuration of the tegmen and the wing. 
