290 The Ohio Journal of Science [Vol. XIX, No. 5, 



Genus Monomorium Mayr. 



1. General body color shining black minimum Buckley. 



General body color yellowish with gaster slightly \ni\i5ca.te6.. . pharaojiis Linn. 



M. minimum Buckley. 



The small shining black workers of this species make small 

 crater-like nests in sandy or gravelly soil. The writers have alsa 

 found them nesting in rotten wood. 



Workers are frequently observed crawling over flowers, 

 where they are in search of the extra floral nectaries. 



M. pharaonis Linn. 



This little yellow or red house ant is an imported species, 

 which has become quite common in houses, where it feeds on 

 sweets, breads, meats, etc. The writer has seen several fiats 

 vacated because of the ravages of this pest. 



Genus A phaeno gaster Mayr. 



1. Epinotal spines as long as the Vjase of the epinotum, or longer; color red. . 



tennesseensis Mayr. 



Epinotal spines not as above; shorter than one-half the base of the epinotum. 2. 



2. Color reddish brown fulva subsp. aqida Emery. 



Color pitchy black fulva aquia var. picea Emery. 



A. tennesseensis Mayr. 



The beautiful workers of this form occur in the Northeastern 

 States, where they live in mixed colonies with A . fulva and its 

 varieties. Their nests are usually found in rotten wood. 



This species bears a close resemblance to A. lamellidens 

 and has been mistaken for it. A . lamellidens, however, does not 

 occur as far north as this species. 



A. fulva subsp. aquia Emery. 



A slender brown species that nests under stones in the woods. 

 The workers feed on dead insects. 



A. fulva aquia var. picea Emery. 



A darker variety of the subspecies. The habits of this and 

 the former are the same. 



