No. 22.] HYMENOPTERA OF CONNECTICUT. 679 



3. Stigmatal groove wanting Isodontia p. 679 



Stigmatal groove present ' Ammobia p. 680 



Subgenus Chlorion Latreille (s. str,), 

 *C. (C.) cyaneum var. asrarium Patton. 

 Bronze- or purplish-blue. This beautiful form provisions its 

 nest with crickets. 



Type locality: Plainville, 30 August, 1871. 



Subgenus Priononyx Dahlbom. 

 Key to Species. 

 Abdomen ferruginous or yellowish; male with sixth sternite 



broadly excavated on apical margin bifoveolatum 



Abdomen dark brown or black; sixth sternite of male simple 



atratum 



°C. (P.) atratum LePeletier, Howard, Insect Book, PI. v, 

 Fig. 20. 



For notes on the habits of this species see "The Solitary 

 Wasps," p. 171. 



C. (P.) bifoveolatum Taschenberg. Howard, Insect Book, 

 PI. xi. Fig. 23. 



Milford (George Dimmock). 



Subgenus Isodontia Patton. 

 Key to Species. 



1. Mandibles with two teeth macrocephalum 



Mandibles with three teeth 2 



2. Legs black harrisi 



Legs more or less yellowish auripes 



C. (I.) auripes Fernald. 



This species, which has been taken at Branford, 19 September, 

 1904, by H. W. Winkley, is of southern distribution and will 

 probably be restricted to the Carolinian area of the State. 

 °C. (I.) macrocephalum Fox. 



C. (I.) harrisi Fernald. Howard, Insect Book, PI. vii. 

 Fig. I. 



This modest colored species will probably be found throughout 

 the State; at present it is only known from New Haven, 13 

 July, 1904 (P. L. B.), 25 July, 1905 (W. E. B.). 



