tiati 



The Philippine Journal of Science 



certain similarities in the penis structure. Its relation to some 

 other species and the relation of those speaes to each other, 

 are weU demonstrated on Plate 2, figs. 21 to 29, which shows 

 the following species, together with the locaht.es in winch they 

 were found: 



Fig 21. Pachyrrhynchus absurdus Schultze, Bucas Grande Island. 

 22. Pachyrrhynchus postpubescens Schultze, Mindanao Province, 



23. Pachyrrhynchus speciosus 



gao; Dinagat. 



24. Pachyrrhynchus 



25. Pachyrrhynchus regius Schultze, Leyte. 



26. Pachyrrhynchus 



Waterh., Mindanao; Bucas; Siar- 

 Samar. 

 Waterh., exact locality un- 



27. Pachyrryhynchus circulars Heller, Catanduanes. 



28. Pachyrrhynchus reticulata Waterh., Luzon, Laguna Province. 



29. Pachyrrhynchus reticulars suhsp. cruciatus suhsp. nov., Lu- 



zon, Tayabas Province. 

 All these species show very distinctly their common ancestry; 

 they also show their divergent development, due to long geo- 

 graphic isolation, into well-separated and distinct species. . 



GROUP II 

 Group II is typified by Pachyrrhynchus speciosus Waterh. 

 Body form mostly very similar to that of the species of the 

 P. moniliferus group. General color dark glowing red, coppery, 

 or dark green. Prothorax and elytra very strikingly marked 

 with narrow scale stripes, bands, or ring figures. 



Key to the species of Pachyrrhynchus, Group II. 

 a 1 . Prothorax dorsally with two longitudinal scale lines, or an arrow-shaped 

 figure. 

 6*. Prothorax dorsally with two longitudinal scale lines, divergent at base, 

 convergent toward and confluent at anterior margin. 



P. postpubescens Schultze. 

 b\ Prothorax dorsally with scale lines forming a more or less slender 

 arrow-shaped figure. 

 c 1 . Elytra with narrow or very broad band markings. 



d 1 . Elytra with very narrow crossbands. P. speciosus Waterh. 



d\ Elytra with three very broad crossbands, first and third inter- 

 rupted at suture P. samarensis Schultze. 



e\ Elytra with large irregular ring figures P. regius Schultze. 



a\ Prothorax dorsally with two subparallel transverse scale lines or a trans- 

 verse band. 

 e\ Prothorax with two subparallel transverse scale lines. 



P. absurdus Schultze. 



e*. Prothorax with a broad transverse band which is discally narrow 



and divergent toward the sides P. latifasciatus Waterh. 



