AMERICAN HEMIPTERA. 35 



waste field near Buffalo as late as November 3d. They were in all 

 stages of development, and I was surprised to find that the imagoes 

 were blackish at first with the connexivum margined with pale. 

 After they attained full maturity they assumed their ordinary pale 

 color, with the connexivum maculated. 



Trichopepl» atricornis Stal. 



As stated by Dr. Uhler, this species belongs more to the north 

 and west of North America. My specimens are from Montana 

 (Cooley) and Llaho (Aldrich)- Uhler records it from Illinois, 

 Wisconsin, Colorado, California, British America and Alaska. It 

 diflTers from the preceding species in having black antennae, a 

 broader head, and a proportionately longer pronotum, with the 

 lateral margins distinctly less oblique. This species exhibits the 

 same variability in the markings on the connexivum found in 

 semivittata, but here the pale border seems to persist, in some of the 

 fully matured adults, which I have never found to be the case in 

 semivittata. 



Genns PEWTATOMA Oliv. 



Lateral margins of the pronotum carinated but not distinctly reflexed. (Lioderma 

 Uhler.) 1. 



Lateral margins of the pronotum acutely carinated and narrowly sharply re- 

 flexed 2. 



1. Second and third joints of the antennse suhequal ; length to the tip of the 



membrane about 10 ram. ; color olive green or brown ; costal margin 



broadly pale, bordered within with a black line Kiiiicia. 



Second joint of the antennse longer than the third; length about 8^ nun.; form 

 oval, triangularly produced before ; color green or olive green, margins, 

 including tho.se of the head, and the apex of the scutellum pale. 



viridicatsi. 



2. Second and third joints of the rostrum equal or subequal, fourth shorter than 



the third ; form more elongated and produced before. (Rhytidolomiu 



Stal.) 3. 



Second joint of the rostrum longer than the third, the latter subequal to the 

 fourth; form projiortionately broader and less produced before. (Chlo- 

 rochroa Stal. ) fi. 



3. Color pale straw-yellow, elytra deep piceous or black Osboi'lli. 



Color green or olive 4. 



4. Color uniform dark olive brown or somewhat greenish ; margins of the pro- 



notum and elytra paler; form more elongated KeiiiliM. 



Color green or olive brown, entire margins behind the bead ai;d a median line 

 on the scutellum, sometimes almost obsolete, pale; form proportion- 

 ately broader, more oval ,"). 



TRANS. AM. ENT. SOC, XXX. • FEBRUARY, 1904. 



