1907] 
On the Ncstincf Hahits of the Psen Barthi Viereclc. 
257 
MISCELLANEOUS CELLS OF WHICH THi: NEST STEUCTURE WAS 
NOT TRACED. 
Cell No. I : 1.1x0.5 cm.; empty; sharply differentiated from 
gallery ; regularly oval ; 0.35 cm. at entrance ; gallery 0.4 cm. not 
packed. 
Cell 2. 1.2x0.7; 4 hoppers somewhat mildewed; regularly 
oval ; gallery to cell packed with sawdust. 
Cell 3. 1.TXO.7 cm.; regularly oval; 4 hoppers. 
Cell 4. 1. 1x0.6 cm.; regularly oval; 5 hoppers; a small fly 
larva crawling about. 
Cell 5. 1.0x0.6 cm.; regularly oval; 3 hoppers; egg on right 
thorax along edge of wing. 
Cell 6. 1 .2x0.7 5 ^SS shaped ; entrance packed with sawdust 
and somewhat smaller than the gallery beyond ; 3 hoppers. 
Cell 7. 1.0x0.6 cm.; irregularly oval, one side being some- 
what flattened ; 3 hoppers ; 3 fly larvae in cell. 
Cell 8. Very irregular ; contents mildewed. 
Cell 9. Irregularly oval; 1.2x0.6 cm.; 3 hoppers; 2 fly larvae. 
Cell TO. T. 1x0.5 c^'^'^- 5 regularly oval; cell and gallery empty ; 
sharply differentiated by ridge ; 0.35 cm. at entrance to cell ; 0.4 
cm. in gallery. 
In no case did the hoppers completely fill the cell, being 
gathered in a ball either at one end or in the middle. Most 
of the cocoons, however, filled the cell and were lightly attached 
to its walls with the hopper rests attached to its outer surface. 
The cocoons are buff or yellowish buff in color, frequently 
W'ith whitish fibres or masses of fibre scattered over the surface. 
One larva in an artificial glass cell spun a cocoon which is entirely 
paper white. They are rather tough, tearing with difliculty, 
though quite thin. 
Nests one, two and three w^ere excavated August 4th. The 
remainder were obtained September ist. On this day but two 
wasps were seen about the log, one resting in the gallery of Nest 
No. 5 and the other carrying prey into Nest No. 6. 
