198 FAMILY V. — PENTATOMID^. 



after reaching the adult stage, and during 40 days laid 18 

 batches, comprising altogether 492 eggs. The average period 

 of incubation was seven days and one hour, the average dura- 

 tion of the immature stages of 17 specimens was 46 days and 

 the average adult life of captive specimens 48 days. Lists com- 

 prising more than 30 injurious insects which are destroyed by 

 this bug are given by Kirkland (1898, 134) and Hart (1919, 

 201). Chief among these are the larvae of the Colorado potato 

 beetle, elm leaf beetle, striped cucumber beetle and asparagus 

 beetle, web-worm, caterpillar and codling moth. The young 

 have also been reared on the evening primrose, Onagra biennis L., 

 by Olsen. 



140 (231). Podisus sagitta (Fabricius), 1794, 99. 



Form and general habitus of P. maculiventris. Color much the same, 

 the margins of cheeks, a line each side of tylus and the humeral spines, 

 blackish ; membrane with a long median fuscous patch at tip ; abdomen 

 with two rows of small dark spots each side; thoracic pleura with 

 numerous coarse black punctures. Head longer and more sparsely punc- 

 tate than in maculiventris, the cheeks conjointly concave. Humeral spine 

 more upcurved and with a blunt projection on its hind margin near tip, 

 this giving it a slightly bifid appearance. Length, 11 — 12 mm.; width, 

 7 — 7.5 mm. 



Orizaba, Mexico, July 27 (W. S. B.) . A neotropical species, 

 mentioned by Van Duzee (1917, 80) as occurring in this coun- 

 try only in Texas; but Barber (1914, 524) records it from St. 

 Augustine and Miami, Fla. 



141 (227%). Podisus fretus Olsen, 1916, 82. 



Elongate-oval, larger than maculiventris. Dull clay-yellow, thickly 

 marked above with reddish-brown punctures, beneath with reddish-purple 

 spots and punctures ; narrow edges of front half of side margins of pro- 

 notum and a small spot on each basal angle of scutellum, calloused ivory- 

 white; embolium and apical half of corium tinged with reddish; an- 

 tennae reddish-brown throughout; membrane brownish-hyaline, with a 

 blotch at tip and a triangular spot at inner basal angle, fuscous; abdo- 

 men without black spots, its middle with a row of vague reddish-brown 

 ones; legs thickly flecked with reddish dots, femora without black spots. 

 Color markings otherwise as in maculiventris. Head broader and more 

 thickly punctate above than there, the side margins of cheeks parallel. 

 Pronotum with humeri short, broad, obtusely rounded, side margins al- 

 most straight, their dentations coarse, bluntly rounded. Structure other- 

 wise as in maculiventris. Length, 12.5 — 14 mm.; width, 6.5 — 7.5 mm. 



Lake County, Ind., June 10 (W. S. B.) ; taken from the wash- 

 up of Lake Michigan. Macatawa Beach, Mich., June 10 (Ger- 



