172 Psyche [October 



2. Tribe Halyini. 

 Genus Brochymena Amyot et Serville. 



1. Lateral angles of thorax distinctly produced in a short truncated dentate lobe, 



not rounded anteriorly; scutellum with a distinct transverse elevation at base; 

 connexi^nlm very wide; color indistinctly mottled grayish brown; length 



14-16 mm arborea Say. 



Lateral processes less abrupt, rounded anteriorly, finely denticulate; scutellimi 

 less strongly elevated at base 2 



2. Juga extending much beyond apex of tylus, contiguous anteriorly, or separated, 



thus forming a long narrow apical sinus; connexivum moderately wide; color 



as in the preceding; length 15-17 mm quadripustulata Fab. 



Juga extending but little beyond apex of tylus, tips more or less convergent 

 above, forming a short, sometimes transverse sinus; connexi^'^lm narrow; 

 markings more contrasted; length 13-17 mm. 



carolinensis Westw. or annulata Fab. 



3. Tribe Pentatomini. 



1. Head very convex above, triangular, almost as broad as scutellum; juga dis- 



tinctly longer than tylus; apex of corium broadly rounded 2 



Head more nearly flat above, narrower; juga often not longer than tylus; apex 

 of corium generally with a distinct, but sometimes rounded angle; if juga are 

 longer than tylus, or apex of corium is broadly rounded, head is not more than 

 two-thirds width of scutellum 3 



2. Anterior angles of pronotum projecting distinctly forward; pronotum wdth three 



longitudinal pale stripes 10. Aelia 



Anterior angles not so projecting; pronotum with one stripe. .11. Neottiglossa 



3. Base of abdomen armed below with a median spine or tubercle, directed ante- 



riorly 17 



Base of abdomen unarmed 4 



4. Lateral margins of juga widely reflexed and greatly thickened; orifices placed 



a little farther outward than lateral margin of intermediate coxal cavities, 



not elevated; front of head almost vertical 15. Murgantia 



Lateral margins of juga not or only narrowly reflexed, not greatly thickened; 

 orifices and head usually otherwise constructed 5 



5. Scutellum broad and rounded at apex, lateral margins almost straight; head 



strongly bent downwards 12. Cosmopepla 



Scutellum generally narrowed at apex, lateral margins concave (as in fig. 2) ; 

 head not or slightly bent downwards 6 



6. Orifices without sulcus, or with sulcus which ends abruptly 7 



Orifices with a gradually disappearing prolongation 14 



7. ^'eLns of membrane irregularly anastomosing or with numerous branches more 



or less distinct 8 



Veins simple or slightly branched 10 



8. Scutellum broadly rounded at apex, as long as corium; apical margin of corium 



rounded, apical lateral angle obtuse 8. Coenus 



Scutellum narrowed at apex, shorter than corium; apical margin straight, apical 

 lateral angle acute 9 



