and on the Species hy which they were constructed. 259 



EXPLANATION OF THE PLATE. 

 Tab. XXXI. 



Fig. 1. Dielocerus Ellisii, mas. 

 Fig. 2. Ditto fem. 



a. The labrum of the female. 



b. The mandible. 



c. The maxilla. 



d. The palpus. 



e. The mentum. 



f. The palpus. 



g. The labium. 



Fig. 3. Nidus formed by the caterpillar. 

 Fig. 4. Interior surface of a portion of ditto. 



h. The woolly covering. 



i. The cells lying horizontally. 

 Fig. 5. Longitudinal section of a nest, exhibiting the cells with the exuvije of the 

 caterpillars. 



k. The surface next the tree. 

 Fig. 6. Transverse section of the last, divided at k, I. 



m. An operculum removed from 



n, which shows where the imago escapes. 

 Fig. 7- The caterpillar. 

 Fig. 8. The nest of Myraptera brunnea, Curt., figured :Jth of the natural size. 



0, The twig by which it is suspended. 



p. The entrance. 

 Fig. 9. The bottom of the nest. 

 Fig, 10. Myraptera brunnea, neuter magnified, 



q, the natural dimensions. 



VOL, XIX. 2 M 



