442 Trans. Acad. Sct. of St. Louis 
and Mexico by Dalla Torra* and Nebraska by Mickel**, 
and from Kansas by Hungerford and Williams***. While 
they were not taken on Missouri soil, they were abundant 
near by. At last a harvest of mud nests of Sceliphron 
caementarium, gathered from a barn at Fish Lake, Dh- 
nois, about ten miles southeast of St. Louis, gave forth 
large numbers of these wasps. Hartman**** tells us 
that 7’. texense occupies small crevices in wooden or stone 
walls, beetle burrows and cells of old mud-daubers’ nests. 
Thus the custom of using mud cells is not new to T. 
texense. When several mud nests were cut open (fig. 68) 
more than fifty cocoons were counted; in every case but 
one we found only one cocoon to the cell. The exceptional 
cell had two cocoons with a thin mud partition between 
them. When using the old cell, the mother texense 
usually sweeps the debris (spiders’ legs and bits of 
cocoon left by the previous tenant) against the back wall. 
One can readily see that the cells have been resealed. In 
many instances we find the same kind of double plug with 
an air space between that we have recorded for its cousin 
T. clavatum. 
They all emerged from the nest between ‘August 1 and 
10, and only a very few were parasitized by the chaleid 
Mellitobia. 
*Catalogus Hymenopterorum, 1897. 
**Univ. Nebr. Stud., 1917. 
***Ent. News 23: 248, 1912. 
****Bull. Univ. Tex., No. 65, 1905. 
