462 PROCEEDINGS OF THE INDIANA ACADEMY OF SCIENCE. 



Subgenus Dichothorax Emery. 



14. L. (D.) pergandei Emery 5 — Wyandotte. 



A southern species, not before known to extend its range as far north as 

 Indiana. It nests in the ground, under stones or moss in rather dry, open 

 places. 



Subfamily Dolichoderinae. 



Genus Dolichoderus Lund. 

 Subgenus HypocHnea Mayr. 



15. D. (H.) mariae Forel var. blatchleyivar. nov S — Bass Lake; Hammond. 

 Eight workers from these localities differ from the typical mariae of the 



Atlantic States in having the head and thorax of a deeper, more brownish 

 red color, the yellow gastric spots smaller, the tibiae and distal ends of the 

 femora black and the base of the epinotum somewhat less convex. This 

 form seems to represent a transition to D. plagiaius subsp. pustulatus Mayr 

 (possibly a hybrid!) 



16. D. (H.) plagiaius Mayr subsp. i)ustulalus Mayr var. beutenmuelleri 



Wheeler 8 — Hammonc?. 

 Like the preceding, this variety nests in the ground l)ut forms much less 

 populous colonies. 



Genus Tnpinotna Forster. 



17. T. sessile Say S — DeLong; Bass Lake; Marion County. 



A very common species, easily- recognized by its strong odor like tliat of 

 rancid butter. It nests under stones, boards, etc. in dry, sunny places. The 

 larvae and pupte are salmon-colored. The nests sometimes contain one or 

 more specimens of a beautiful iiiyrniec()j)hilous Staj)liylinid beetle, Noto- 

 iaphra laula Casey. 



Subfamily Camponotinae 

 Genus Brachymyrmex Mayr. 



18. B. heeri Forel subsp. depths Emery S — Knox County. 



The smallest of our ants. It nests under stones in shady woods and at- 

 tends root-coccids like the species of Acanlhoviyops. The pupae are enclosed 

 in cocoons. 



Genus Prenolepis Mayr. 



19. P. imparis Saj". 



Not recorded from Indiana but undoubtedlj' occurring in the state as it 

 is common in Illinois and the Atlantic States. It forms crater nests in oak 

 woods. The workers often distend the gaster with honey dew to such an 

 extent that they may be regarded as honey ants. 



20. P. imparis var. minuta Emery S. — Hammond; Wyandotte. 

 JMerely a small variety of the pi'eceding. 



