1915] Parshley — Sy.tiema'ir Papers on New England Tlemiptem 177 



4. Frena extending beyond middle of scutellum; bucculse slightly elevated, dis- 



appearing posteriorly 5 



Frena extending to middle of scutellum; buccula? distinctly elevated, not thin- 

 ning out posteriorly; male with two patches of silken pubescence on the 

 abdomen below 2. Mineus 



5. Larger, length usually over 13 mm.; tylus generally shorter than juga, apex of 



head thus emarginate ^- Apateticus 



Smaller, length usually less than 13 mm. ; tylus as long as juga, apex of head thus 

 truncate 5. Podisus 



1. Genus Perillus StaK 

 Perilloides Schouteden. 



Anterior femora armed with a low conical tubercle; color entirely black, or black 

 with red or yellowish markings; length 5-7 mm exaptus Say. 



Anterior femora armed with a more or less cylindrical blunt spine ; color brown with 

 pale yellowish markings; length 8-10 mm circumcinctus Stal. 



2. Genus Mineus Stal. 



Color bluish black with red markings; length 8 mm strigipes H. S. 



3. Genus Zicrona Amyot et Ser\-ille. 



Color iridescent greenish blue; length 6 mm caerulea Linn. 



4. Genus Apateticus Dallas. 

 Vaginal plate of the female genitalia triangular (fig. 8) ; pronotal spines shorter and 



less acute; anterior lateral margins of pronotum more distinctly serrulate; color 



brown; length 13-18 mm bracteatus Fitch. 



Vaginal plate quadrangular (fig. 9) ; pronotal spines longer and more acute; anterior 



lateral margins of pronotum very finely serrulate; color as in the preceding; 



length 16-20 mm cynicus Say. 



5. Genus Podisus Herrich-Schsffer. 



1. Lateral angles of pronotum blunt, projecting but little; membrane without a 



dark longitudinal stripe; color mottled brown; length 9-11 mm., placidus Uhl. 



Lateral angles distinctly projecting, more or less spine-like; membrane vnth a 



dark longitudinal stripe , 2 



2. Color usually reddish brown; basal spine of abdomen short, not extending be- 



tween hind coxae; lateral angles of pronotum rather blunt 3 



Color grayish brown; basal spine of abdomen long, extending between hind 

 coxae; lateral angles acute; length 10-12.5 mm maculiventris Say. 



3. Smaller, length 7-8 mm.; form narrow; second antennal segment one-fourth 



longer than the third; color pale reddish brown modestus Dallas. 



Larger, length 8-10 mm.; form wider; .second antennal segment one-third longer 

 than the third; color darker serieventris Uhl. 



6. Genus Stiretrus Laporte. 

 Color very variable, green with white or yellowish markings in New England speci- 

 mens, blue and red in various combinations in forms from other regions; length 

 about 9 mm anchorage Fab. 



