EXPLANATION OF PLATE XV. 



Occipital regions and suspensoria of Pylhonomorpha, one-half natural size. 



Fio. 1. Plalecarpus cort/plucus : a, from behind ; i, from before ; c, from below. 



2. Plalecarpus ictericus : a, from behind ; J, from below. 



3. Plalecarpus curlirostris : a, from bebind ; b, from in front ; c, from below. 



