25 



On Jul}'' 2 Mr. Newell and myself visited this colony, and 

 by means of a wire and lumd trowel procured a niunber of larva?. 



Fig. 14. — A Kobbei--fly. Kraj- tnttruliti: a, adult: h, face view of the head of 

 adult; c, larva : t/. bead of larva; e, puparlum : all enlarged. (After Titus, U. S. 

 Department of Agriculture, Dureau of Entomology, Bulletin 54.) 



In the nests we recog:nized the remains of three species of horse- 

 fijes, the scrcM'worm i\y and a common g'reen and black fly 

 (Odontomyia cincta). 



On July 3 the niMterial found in a single burrow with i 

 rearly full-grown lan^a was counted, with the result that sixty 

 w.'ngs and twenty-three heads of horseflies were found. All the 

 heads were of females. 



Another Inirrow coht.iined ninety-two wings of horseflies 

 ai d four wings and other remains of Odonlomyia cincta. 



Another contained eighty-two wings of horseflies, but no 

 remains of other species. 



On July 4, in company with ]\rr. W. 0. Martin, I visited a 

 C(lony of wasps on the ridge east of the Station. From a ne.st 



