38 ILUNOIS BIOLOGICAL MONOGRAPHS [270 



The dorsal and dorso-lateral portions of abdominal segments one to eight 

 are provided with parascoli. The dorsal parascoli are brown, while the 

 dorso-lateral and lateral ones of the first and fourth segment are white or 

 cream-colored, and also the area near the pinacula of these parascoli is 

 white. Segments two to nine are provided with paralateral verrucae, 

 while segment one has a small paralateral chalaza. The sterna of segments 

 two to nine are provided with four verrucae arranged in a transverse row 

 on each sternum; while the sternum of the first segment has only two ver- 

 rucae, the ventro-lateral ones are absent. The ventral and ventro-lateral 

 verrucae on either side of the meson of the ninth segment are almost fused 

 so that there seems to be only two on this segment. The dorsal surface 

 of the ninth segment is about twice as long as the ventral, shield-shaped, 

 the caudal margin is rounded, and densely setaceous. The legs are well 

 developed, long, and stout. The proximal portion of the ,tarsal claw is 

 provided with a distinct appendiculate tooth. 



Coccinella sanguinea Linn. — The body is elongate and widest at the 

 metathorax. The dorsal and lateral surfaces are provided with strumae, 

 and the ventral surface with verrucae or chalazae. The general color of 

 the body is light to dark brown, mottled or spotted with yellow or cream- 

 colored areas. The head is light brown and the face is yellow. The mouth 

 is directed ventrad and slightly cephalad. The prothorax is about three- 

 fourths as long as wide, and the caudal margin is slightly emarginated. 

 The dorsal shield is light brown in color, entire, with a light yellow line on 

 the meson, and the cephalic and lateral margins are provided with chalazae. 

 The mesothorax and metathorax are subequal in size, about twice as wide 

 as long, each with a small oval shield on either side of the meson. There 

 is a light yellow area on the meson between the shields of each segment. 

 The mesothoracic spiracles are located in the mesocoria cephalo-dorsad 

 of the mesocoxacoilae, the metathoracic spiracles are rudimentary. The 

 caudal portion of the lateral aspect of the mesothorax and metathorax 

 bears a small verruca. The sterna of all of the thoracic segments are 

 provided with a pair of small verrucae adjacent to each other and the 

 meson. Abdominal segments one to eight are provided with dorsal and 

 dorso-lateral strumae, and each segment bears more than five chalazae 

 and a few scattered setae. The dorsal strumae of the fourth abdominal 

 segment, the dorso-lateral strumae of the first and fourth segments, and 

 the lateral strumae of the first, fourth, and fifth segments are white or light 

 yeUow. There is a small paralateral struma, which in many cases appears 

 to be verruca-like, located ventrad of each lateral struma, except in the 

 first abdominal segment where it is wanting. The sterna of segments one 

 to nine are each provided with ventral and ventro-lateral groups of chala- 

 zae, except in the first segment, where the ventro-lateral groups are 

 wanting. The dorsum of the ninth segment is shield-shaped with the 



