450 PROCEEDINGS OF THE INDIANA ACADEMY OF SCIENCE. 



on a sloping sand bank in a spot about six feet square. One ease was ob- 

 served where two hungry beetles devoured a whole colony of ants. Each 

 would take every other ant that appeared at the mouth of the hole. In 

 ease one was unsuccessful in his catch, he would chase his prey some distance, 

 while in the meantime his partner would do his utmost to devour every ant 

 that appeared. The a^'erage rate of consumption for twelve minutes was 

 an ant for each beetle everj- ninetj'-five seconds. When no more ants would 

 appear one repanda destroyed the mound and dug half the length of his * 

 body into the ground in quest of more food. 



One solitary C. piaictulata was found in an old pasture field. 



Monroe County. Field observations of the Cicindelidae in the vicinity 

 of Indiana University were made in the spring and fall of 1915 and 1916. 



C. ancocisconensis was the only species found colonized in this county. 

 This colony inhabited the steep banks, made by the -Jordan river cutting 

 through a hill, about a quarter of a mile east of tlie University. The banks 

 are about ten feet high and the burrows were found in the soil at the summit. 

 This position was especially advantageous, as there were largo stones both 

 on top of the hill and also in the cut, which sheltered the larvae and adults 

 from the cold, and served as brooding places for small ants — tiger beetles' 

 favorite food — and other prey. 



Diu"ing the early spring days when the ground was cold and wet, the 

 beetles spent most of their time sunning and feeding on the stones and barren 

 spots at the top of the hill. However, as the Avarm days of spring approached 

 thej' inhaVnted the moist central regions of the banks, while later when aU 

 the ravine was dry e.xcept along the bed of the .Jordan, they wen; found onlj' 

 at the base of the cut. 



In the fall when even the stream was drjs practically all the new brood 

 were found near the edge of a pimd. about two hundred feet further down the 

 ravine, where the food was more abundant. The majority of this colony 

 disappeared in late June. The imagoes emerged in August. 



During the dry weather one specimen of .scvgatlata was found feeding 

 with the abo\e colony. Single specimens of sex(futlnla were also found on 

 the university campus, along flat, rocky ravines, and more frequently on 

 the clay hills near the University water works. The latest specimens of this 

 single brooded species were collected in late June. 



Funrtulala were ofttimes found on the campus along tlu^ beaten paths, 

 and also in the fields about Bloomington. The single brooded fall species 

 was found as late as the first of November. 



A few specimens of vulgaris and also of purpurea were collected in this 

 county. 



Putnam County. In June, 191b, a number of C. repanda were collected 

 from the sand bars of a creek, about one mile north of Greencastle. Although 

 no highland species were found in this locality, one specimen of sexgultala 

 was found in the spring collections of Depauw University students._ The 



