PLATE XIII. 
Fig. 1 . Pterygia quadridens , page 74. The antler-like forms of the shoulder processes 
are distinctive. This form is better shown by the front view. 
Fig. \a. The head and its adjuncts. The summits of the horns are different in form 
from those seen in profile. 
Fig’. 2. Pterygia tenaicornis, page 74. Imago. The horns are sub-clavate. 
Fig. 3. Pterygia tripodia, page 74. Not unlike tile last species, but the legs are more 
spatulate, and the insect is larger. 
Fig. 3 a. Frons and metopidium. 
Fig. 4. Pterygia flavopuncta, page 75. [Xanthosticta ?) Perhaps allied to the genus 
Bolbonota. The legs are not dilated or spatulate. 
Fig. 5. Sphonyopliorus championi, page 77. Imago enlarged by permission from the 
figure given in the Biologia Centrali Americana. 
Fig. 5r/. Head of the same insect. 
Fig. G. Sphonyopliorus robustulus, page 77. Imago copied from the B.C.A. 
Fig. G«. Front view of the head of the same. 
