484 
Fig. 56. An old nest of Polistes pallipes, used an 
Fig. 57. 
Fig. 58. 
Fig. 59. 
Trans. Acad. Sci. of St. Louis 
EXPLANATION OF PLATE 
PLaTE XXX 
la 
nd re-sealed with mud 
y Tropoxplon clavatum, and with wax (arrows) by Osmia 
The pipe-organ nest of Trypozylon politum. 
The nagtaanlt of Tryporylon politum. (X) shows remnant of 
webby covering. 
Back view of nest of Trypoxylon politum. 
