240 ACADEMY OF NATURAL SCIENCES 



abbreviated black lines placed triangularly, and pale : venter pale, 

 pruinous, with dusky points : stigmata each composed of three 

 distinct black points placed obliquely : pectus and pospectus pale, 

 dusky each side. 



Length less than three-fifths of an inch. 



A common species, and seems to approach Halys anmdata 

 Fabr., but it does not, in all respects, agree with the description 

 of that species. 



2. P CLANDA. — Pale yellowish ; thorax with two spots, hemely- 

 tra and scutel with a line, black. 



Inhabits Missouri. 



Head densely punctured, rufous, blackish at base : antennse 

 rufous, blackish at tip : thorax pale yellow, with two large trans- 

 verse brown spots, posterior margin brown ; posterior angles not 

 prominent : scutel pale yellow, with a broad brown line, bifid 

 before, hemelytra pale yellow on the basal portion with a brown 

 line and inner edge ; tip blackish : beneath pale yellow : feet 

 rufous : tibia? with a yellowish annulus : venter with two series of 

 black spots, and on each side a brown vitta ; ultimate segment 

 with only three spots. 



Length two-fifths of an inch. 



Var. a. Spots and lines of the upper surface, black ; venter 

 with six series of black spots. 



A ar. b. Sanguineous; head, two spots, and posterior margin of 

 the thorax, disk of the scutel, hemelytra, pectus and feet, black j 

 venter with six series of black spots. 



Var. c. Sanguineoas; head, two spots and posterior margin of 

 the thorax, disk of the scutel, hemelytra, pectus and feet, black ; 

 venter black on the disk. 



A handsome species, subject to much variation. 



3. P. EXAPTA. — Sanguineous; thorax with a black line; scutel 

 black with a yellow margin. 



Inhabits ^Missouri. 



Head at base and antennae, black : thorax with a transverse 

 black line before the middle; posterior angles rounded, not prom- 

 inent: scutel black, with a yellow margin, excepting at base: 

 tergum blackish, with a rufous margin : hemelytra black, exterior 



[Vol. IV. 



