THE SHIELD-BACKED BUGS. 49 



Pronotum with lateral angles more flattened and less rounded. Connexi- 

 vum narrowly exposed. Osteolar canal more abruptly bent than in 

 either of our other species. Length, 4.2 — 6 mm. ; width, 3 — 4 mm. 



Dunedin, Kissimmee, and R. P. Park, Fla., Nov. 18 — Apr. 26. 

 Recorded from numerous other stations in that State. Its 

 known range extends from southern Illinois (Hart, 1919, 170) 

 and North Carolina south and west to Kansas, Colorado, Cali- 

 fornia and Mexico. About Dunedin it is the most common of 

 the Scutelleridae, hibernating beneath cover throughout the 

 winter, and more abundant in spring, when it is taken by 

 sweeping tall grasses about ponds and low shrubs in open sandy 

 places. By most authors it has been listed as H. grammicus 

 (Wolff) , but that name was shown by Kirkaldy to belong to an- 

 other form. The specific name parvulus is well applied, the 

 males being one of our smallest forms of the family. 



VIII. Camirus Stal, 1862, 57. 



Small oval or oblong-oval, convex species having the head 

 about as broad as long, rounded in front, strongly declivent ; 

 tylus convex, slightly longer than cheeks, the latter with side 

 margins sinuate ; antennae with first and last joints subequal 

 and longest, second and fourth subequal, each slightly longer 

 than third ; beak reaching first ventral, its second joint nearly 

 one-half longer than third and fourth united, these subequal, 

 somewhat flattened and finely carinate; pronotum with disk 

 uneven and with a narrow transverse median groove, its lateral 

 angles obtusely rounded ; scutellum covering the costal border 

 of elytra except the basal fourth ; connexivum narrowly ex- 

 posed ; osteolar opening very small, without either visible tube 

 or canal. 



Two species are known from the United States and three 

 others from Mexico. But one is found in our territory. 



12 (6). Camirus porosus (Germar), 1839, 108. 



Dull black, thinly clothed with minute prostrate, grayish pubescence; 

 upper surface finely, closely and deeply punctate; antennae and tarsi 

 piceous; connexivum with a minute smooth white spot near each incisure. 

 Pronotum with front side margins sinuate or concave; disk with a nar- 

 row transverse line in front of the deeper submedian groove, and a broad 

 vaguely defined impression each side. Scutellum with disk somewhat 

 uneven and with a narrow transverse impression across its basal third, 

 this ending each side in a rather deep oblong impression. Under surface 



