s 3 * 6 Schultze: Pachyrrhynchus 535 



are placed in this group: Pachyrrhynchus orbifer Waterh., P. 

 inf emails Fairm., P. zebra Schultze, P. stellio Heller, P. rugi- 

 collis Waterh., P. sphaericollis Schultze, P. jugifer Waterh., P. 

 decussatus Waterh., P. phaleratus Waterh., P. halconensis 

 Schultze, P. reticulatus Waterh., P. circulate Heller. The last 

 two are intermediate species, leading to Group II. 



Key to species of Pachyrrhynchus, Group I. 

 a 1 . General color not black. 



b\ Dark purplish coppery, with metallic luster, no scale markings. 



P. sphaericollaris Schultze. 



o*. Dark reddish brown, prothorax and elytra with rugosities filled with 



reddish golden scales P. rugicollis Waterh. 



, coarsely punctate-striate. 



1 var. inornatus Waterh. 



d\ Elytra finely coriaceous, moderately glossy, finely punctate-striate. 



P. infernalis Fairm. 



*. Not uniform; with various scale markings. 



e\ Elytra with separate or confluent, narrow or broad, entire, 

 circular or reticulated markings. 

 f. Elytra with separated pale yellow rings. 



P. circulatus Heller. 

 f. Elytra with confluent, narrow or broad, pale green or yellow- 

 ish green, rounded or netlike markings. 

 g\ Line markings broad; prothorax with a diamond-shaped 

 inclosed area on disk; elytra with reticulated lines. 



P. reticulatus Waterh. 

 g-. Line markings narrow; prothorax discally with a cross 

 figure; elytra with netlike markings. 



P. reticulatus cruciatus Schultze. 

 e\ Elytra with various markings, in but one instance forming 

 narrow interrupted circular markings. 

 h\ Prothorax and elytra with roundish or elongate rose- 

 colored or golden spots. 

 i\ Elytra with a large sutural spot; all spots rose col- 

 ored P. roseomaculatus Waterh. 



r Elytra without a sutural spot; all spots golden. 



P. striatus Waterh. 

 h\ Prothorax and elytra with longitudinal or transverse 

 lines or bands entire or interrupted. 

 j\ Prothorax with both median and dorsolateral longi- 

 tudinal lines. 

 fc\ All lines on elytra very narrow, present in frag- 

 mentary traces, transverse line much inter- 

 rupted, consisting of a row of dots. 



