No. 34-] HEMIPTERA OF CONNECTICUT: PENTATOMIDAE. 759 



Lateral margins of pronotum crenulate, lateral angles prominent, 

 rounded or acuminate Euschistus, p. 761 



12. Form elongate ; second and third rostral segments nearly equal . . 



Rhytidolomia, p. 760 



Form broad ; second rostral segment longer than third 



Chlorochroa, p. 760 



13. Lateral angles of pronotum with an anteriorly projecting spine; 



form elongate Solubea, p. 761 



Lateral angles unarmed ; form broad Mormidea, p. 761 



14. Juga not longer than tylus Thyanta, p. yd^) 



Juga longer than tylus, almost or quite contiguous in front 



Peribalus, p. 759 



15. Juga not or slightly longer than tylus 16 



Juga much longer than tylus, usually contiguous in front 



Dendrocoris, p. 769 



16. Fifth antennal segment less than twice length of second; metas- 



ternal orifices continued in a long tapering ruga 



Acrosternum, p. "^dy 



Fifth antennal segment more than twice length of second 



Banasa, p. 768 

 Peribalus Mulsant and Rey. 



A genus of few species having the head somewhat dilated later- 

 ally, concealing the antenniferous tubercles from above, and the 

 surface of the body without conspicuous pubescence. One species 

 occurs within our limits. 

 P. limbolarius Stal. (PI. xviii, 8.) 



Enum. Hemip., ii, 34, 1872. 



Brown, with close black punctation; lateral margins of prono- 

 tum and of hemielytra at base, connexival margin and apex of 

 scutellum yellowish white. Length 7.5-9 mm. This species is 

 often taken in sweeping vegetation. It feeds on shepherds purse 

 and goldenrod and hibernates as adult. 



New Haven, 24 June, 1902 (E. J. S. M.) ; East Haven, 9 July, 1908 

 (B. H. W.) ; Hamden, 24 July, 1910 (B. H. W.) ; Manchester, 30 Aug., 

 1912 (D. J. C.) ; Yalesville, 30 Sept., 1913 (W, E. B.) ; Rainbow, 24 May, 

 1915 (M. P. Z.) ; Cornwall, 12 Oct., 1919 (K. F. C). 



Trichopepla Stal. 



This genus is characterized particularly by the long fine pubes- 

 cence on all parts of the body. One species occurs in New 

 England. 

 T. semivittata (Say). 



Het. New Harm., 9, 1832. 



Light to dark brown, more or less suffused and strongly punc- 

 tured with black ; three lines on head, lateral margins and irregular 

 discal spot of pronotum, and margins and median line of scutellum 

 pale and less strongly punctate. Connexivum spotted. Length 

 6.5-8 mm. 



This peculiar form is sometimes found late in the fall in various 

 stages of development, feeding on the wild carrot. In the newly 



