552 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Antennas entirely black, thorax smooth and shining . 



pennsylvanica 

 2. Mesonotum smooth and shining or finely ptmctulate caraborum 



Mesonotum rugose or coarsely sculptured 3 



g. Coxae pale 4 



Coxae black punctiventris 



4. Abdomen longitudinally striated throughout striativentris 



Abdomen striated at base but smooth or punctate apically 



marylandica 



P. caraborum Riley. 



Black, shining, the thorax finely rugulose, the scutellum almost 

 smooth. Antennae dark brown or black, the scape a little pale at 

 the extreme base. Legs reddish yellow ; the coxae basally and the 

 mid and posterior tibiae and tarsi fuscous. First three abdominal 

 segments striated. Length 1.6-1.8 mm. 



Parasitic on the eggs of Chl&nius impunctifrons, a Carabid 

 beetle. 



P. punctiventris Ashmead. 



Black, the thorax and scutellum longitudinally rugulose, sub- 

 opaque. Antennae black, the scape basally rufous. Wings sub- 

 fuscous. Abdomen punctate, striate on the three basal segments. 

 Length 2.5 mm. 



P. marylandica Ashmead. 



Black, thorax and scutellum rugoso-punctate. Antennae black, 

 the scape basally and the pedicel at apex yellowish. Legs, 

 including coxae, brownish yellow. Abdomen striated, the fourth 

 and following segments punctate. Length 2 mm. 



Salisbury, 30 August, 1904 (W. E. B.). 



P. pennsylvanica Ashmead. 



Black, shining, sparsely pubescent, the punctation of the 

 thorax very fine and faint. Antennae black. Legs piceous ; tro- 

 chanters, knees, tips of tibiae, and base of tarsi yellowish. Length 

 1 mm. 



P. striativentris Ashmead. 



Black, the head and abdomen shining, the thorax opaque, 

 closely punctulate. Abdomen longitudinally striated for its entire 

 length. Legs brownish yellow, the coxae dusky basally. Length 

 1.5 mm. (male). 



