90 FAMILY IV. — CYDNID^E. 



sternal plate ; front tibiae enlarged beyond the middle but not 

 flattened, middle and hind ones terete, slender, all armed with 

 a few short spines. Genital plate of male broadly scoop-shaped, 

 its hind margin narrowly reflexed. 

 One species occurs in North America. 



52 (71). Sehirus cinctus (Palisot de Beauvois), 1805, 114. 



Broadly oval, subdepressed, bluntly rounded behind. Piceous-black 

 or blue-black, shining; side margins of pronotum and elytra narrowly 

 edged with ivory-white; corium often with a small white spot near outer 

 posterior angle; membrane piceous-brown; antennae piceous, the second 

 joint and incisures paler; beak, tibiae and tarsi piceous or reddish-brown, 

 the tibiae with a smooth white line on outer 

 side. Cheeks not meeting in front of tylus, 

 finely, closely confluently punctate. Pronotum 

 distinctly narrowed from base to apex; disk 

 with a broad, vague shallow transverse im- 

 pression, in front of which is a curved smooth 

 area, elsewhere coarsely, unevenly, confluently 

 punctate. Scutellum obliquely transversely 

 wrinkled, finely, sparsely, unevenly punctate. 

 Elytra evenly, finely, not closely punctate. Un- 

 der surface finely, and regularly punctate, the 

 middle of abdomen almost smooth. Length 

 4 — 7 mm.; width, 2.5 — 3.5 mm. (Figs. 9, a and 



Fig. 16, X 1". 16). 



I After Lugger). 



Found throughout Indiana but much more frequent in the 

 central and southern portion, April 2 — Sept. 18. Evidently hi- 

 bernates as imago, as specimens have been found crawling 

 along sandy pathways and beneath logs in early April. In sum- 

 mer it occurs on milkweed, flowers of wild plum and other 

 foliage in sandy or alluvial soils, and along fence rows. San- 

 ford and Dunedin, Fla., April (IV. S. B.) ; taken by sweeping 

 low vegetation near borders of ponds. These are the only defi- 

 nite stations for that State, though specimens labelled "Flo- 

 rida" are in the U. S. National Museum. This is one of our 

 more common Cydnids, the thickened white edges of pronotum 

 and elytra and the lack of marginal ciliae making it easily 

 recognized. Its known range extends from Quebec and New 

 England west to British Columbia and Nebraska and south to 

 Florida, Mississippi, Texas and Mexico. Hart (1919, 203) re- 

 cords it as occurring in sandy regions in numbers on the stems 

 of the pale horse-mint, Monarda punctata (L.) ; also on sweet 

 clover and nettle. In Iowa Stoner has found the imagoes hiber- 



