No. 22.] HYMEN OPTERA OF CONNECTICUT. 619 



P. algonquina Viereck. 

 First tergite with transverse carina; venation black; wings 

 slightly dusky ; clypeus and mandibles of male yellowish. 



Tiphia Fabricius. 

 Key to Species. 



1. Species with a transverse furrow on first dorsal abdominal 



segment near its middle 2 



Species with no transverse furrow on first dorsal abdominal 

 segment near its middle 3 



2. Antennae black waldeni 



Antennae brownish brunneicornis 



3. Face and mesonotum doubly punctate inornata 



Face and mesonotum not doubly punctate 4 



4. Third abscissa of radius forming a straight line with second 



transverse cubitus punctata 



Third abscissa of radius not forming a straight line with 

 second transverse cubitus 5 



5. Antennae brownish beneath egregia 



Antennae black beneath 6 



6. Wings colorless relativa 



Wings with a brownish tint relativa var. 



*T. waldeni Viereck. 



Male : length 8 mm. 



Type locality: New Haven, 16 August, 1904 (B. H. W.), 14 

 August, 1906 (W. E. B.). Also, North Haven, 3 August, 1905 

 (B. H. W.). 



*T. brunneicornis Viereck. 



Male: length 7 mm. 



Type locality: New Haven, 6 July, 1904 (H. L. V.). 



T. inornata Say. Howard, Insect Book, PI. viii, Fig. 12. 



Male: length 7-1 1 mm. Female: length 12-14 mm. 



Occurs all over the State in August and September, and very 

 likely earlier and later than these dates indicate. New Haven, 

 12 September, 1903, Salisbury, 27 August, 1904, New Milford, 

 31 August, 1904, Mount Carmel, 10 June, 1908 (W. E. B.) ; New 

 Haven, 16 August, 1904 (P. L. B.). 



T. punctata Robertson. 



Male: length 11 mm. 



Only one speciment is known to have been taken in the State, 



