104 HYDUADICPltAGA — DtTISCIDAl'!. 



Short ovate ; brown ; elytra rust-brown at base, with 

 very thin and short pubescence. L. 2 1. Scarce. 



H. I at us, Steph. 



2, Punctuation of upper-side uniform. 

 A A, Disc of thorax black or brown. 

 a a. Elytra yellowish, with black lines. 



A ci. Angle at junction of sides of thorax 

 and elytra distinct. 



A 1. Outer margin of elytra not toothed 

 before apex. 



Red-yellow ; thorax with anterior margin and two spots 

 on posterior margin black ; the black lines on each elytron 

 touch one another, leaving the outer margin, four spots 

 attached to it and two inner spots yellow, the black suture 

 dilated at apex. Sides of thorax much rounded, angle at 

 junction with elytra strong. L. 2|- 1. Moderately common. 



H. cluodecimpustulatus, 01. 



S It Outer margin of elytra with a tootli 

 before apex. 



a 1. Elytra with suture and seven lines 

 on each (often nearly touching each 

 other) black, the second interrupted 

 in middle, fourth dilated at apex, hfth 

 reaching base and abbreviated behind, 

 sixth and seventh consisting only of 

 short marks behind base and in 

 middle, leaving six yellow spots. 



Head and thorax yellowish, latter witli a narrow border 

 in front and beliind and two spots at base black. Sides of 

 thoviix rounded, angle at junction Avith elytra strong. 

 L. 2 1. Conunon. H. cleirressus, Eal). 



b 1. Elytra with suture and six lines 

 on each (not reaching apex and usually 

 not base) black, the sixth much ab- 

 breviated l)ehind, often interrupted in 

 middle, there is also a longitudinal 

 black spot at side, often attached to 

 the sixth line. 

 Head and tliorax red-yellow, latter witli the middle of 

 the anterior margin, the posterior margin and two spots at 



