1915] Parshley — Systematic Papers on New England Hemiptera 171 



2. Tarsi 2-segmented; sternum with a distinct longitudinal keel; frena' extending 



almost to end of scutellum 3. ACANTHOSOMATIN.E 



Tarsi 3-segmented; sternmn without keel; frena shorter 3 



3. Scutellum large, broad at apex, extending farther posteriorly than the corium; 



frena very short; sides of the pronotum with a single prominent tooth just 

 anterior to lateral angle, the angles thus emarginate 



1. GRAPHOSOMATINiE 



Scutellum smaller, more or less narrowed apically, generally shorter than the 



corium; frena longer; pronotum with numerous teeth or with no tooth near 



lateral angle 2. PENTATOMIN.E^ 



1. Subfamily GRAPHOSOMATIX/E. 



Tribe Podopint. 

 Genus Podops Laporte. 



Size larger, length about 6.5 mm.; 2d, 3d, and 4th segments of antennae darker; 



lateral tooth of pronotum obtuse; color very dark brown. . . c'nctipes Say. 

 Size smaller, length 5 mm.; 2d, 3d, and 4th segments of antennse paler; lateral tooth 



of pronotum acute; color as in the preceding parvula V. D. 



2. Subfamily PENTATOMIN.E. 



1. Body very flat, margins explanate; head with thin dilated margin, about as 



wide as base of scutellum, flat above; scutellum broad, scarcely narrowed 



apically (fig. 5) 1. Sciocorini 



Body not extremely flat and explanate; head not very widely dilated, when 

 nearly as wide as base of scutellum head is distinctly convex above, usually 

 narrower than scutellum 2 



2. Juga with a prominent lateral tooth near apex (fig. 3) ; abdomen shallowly sul- 



cate beneath; rostrum extending behind posterior coxae 2. Halyini 



Juga without lateral tooth (fig. 6); abdomen not sulcate; rostrum shorter 



3. Pentatomini 



1. Tribe Sciocorini. 



Genus Sciocoris Fallen. 



Color brown, connexivum' spotted; length 6.5 mm (fig. 5) .^ microphthalmus Flor. 



1 The frena are longitudinal grooves in the edges of the scutellum which receive the inner 

 margins of the hemielytra. They end about where the clavus disappears beneath the scutellum. 



2 In the latest general catalogue (Kirkaldy, 1909) the Acanthosomatinffi and Graphoso- 

 matinae are given as tribes of the Pentatoniins. This matter is still open to discussion, I 

 believe, but in the present series I plan to follow the check-list of Van Duzee, to whom I am 

 again indebted for advance information. 



3 The marginal region of the abdomen. There are very few records of the occurrence of 

 Sciocoris in this country, and collectors should be on the watch for it. 



* The ocelli in this species are very small and unfortunately do not .show in the figure. 



