186 FAMILY V. — PENTATOMID^E. 



b. Antenna? black, the incisures only pale; abdomen with a submar- 



ginal row of black spots. 

 c. Black with red markings; elytra black, the basal half of costal 

 border red. 130. bioculatus. 



cc. Rufous or chestnut-brown, the markings ivory-white, or pale yel- 

 low; corium pale, only the inner margin narrowly black. 



130a. var. clanda. 

 bb. Antennae fuscous, first two joints and basal half of third reddish- 

 yellow; abdomen without rows of dark spots. 



131. CIRCUMCINCTUS. 



ixt. Front femora armed with only a small tubercle which is not longer 

 than wide; transverse dark bar of pronotum entire; smaller, 

 length, 5 — 7.5 mm. 132. exaptus. 



130 (216). Perillus bioculatus (Fabricius), 1775, 715. 



Oblong-oval, subconvex above, more strongly so beneath. Above 

 black, shining; front half of pronotum, except a large spot each side 

 of middle, a submarginal stripe on all sides of disk of scutellum, edge 

 of basal half of embolium and margin of connexivum bright orange-red ; 

 abdomen red, in female with two submedian rows of small spots, a round 

 spot on each spiracle, a stripe along the middle of each side, and the 

 genital plate, black; in male with a large central black spot embracing 

 the pubescent areas; thoracic pleura black; lower margin of pronotum 

 red ; legs black, the middle and hind tibiae with a pale ring. Head 

 coarsely, closely, confluently punctate. Pronotum with front half strong- 

 ly declivent, disk coarsely, very sparsely and unevenly punctate. Scutel- 

 lum sparsely and rather finely punctate, the black margins near base 

 very coarsely so. Elytra and connexivum finely, shallowly, and rather 

 evenly punctate. Abdomen almost smooth, the sides finely rugose; tho- 

 racic pleura very coarsely and rather sparsely punctate. Length, 8.5 — 

 11.5 mm.; width, 5.5 — 7 mm. 



Lake and Posey counties, Ind., Sept. 12 — 23. This, the 

 typical bioculatus, includes the varieties "b" and "<" of Say's 

 Pentatoma clanda. As a species it ranges from Ontario and 

 New York west to the Pacific and southwest to Florida, New 

 Mexico and Arizona. Barber (1914, 524) lists it from Florida 

 without definite locality. The majority of the records have 

 been made under the name P. clanda (or clanda) Say, and it is 

 therefore difficult to give the approximate range of each of the 

 two forms. Hart (1919, 198) records typical bioculatus from 

 Algonquin, 111.; Gerhard (Ms.) from Chicago, 111., and Pent- 

 water, Mich., April 19— Sept. 6, and Stoner (1920, 119) from 

 Clinton, la. It has been seen to prey upon the larvae of the 

 Colorado potato beetle, but as Stoner well says "it is apparently 



