358 The Philippine Journal of Science 1928 



or coarse. Some specimens show the pronotum short, roughly 

 sculptured, the sides convergent, and the dorsum flattened cau- 

 dad Others show the pronotum longer, cylindrical, finely trans- 

 versely striated, and strongly convex. The pronotum is usually 

 copper colored, the transverse sulci being bluish or greenish 

 laterad and the lateral borders broadly or narrowly blue. Some- 

 times the whole cephalic margin of the pronotum is greenish 

 or there is a greenish golden sheen mediad with blue lateral 

 borders cephalad of the posterior margin and caudad of the 

 bluish anterior sulcus. Some specimens show the transverse 

 sulci to be green or golden, some almost entirely copper colored. 

 The elytra may be long or short, the sculpture being sometimes 

 shallow and less confluent in the caudal half; the apical borders 

 have a narrow bluish or greenish stripe, the lateral borders a 

 larger one of dark copper violet, mediad of which on the ante- 

 rior fifth is a greenish or bluish stripe (which may be entirely 

 obsolete, or may extend caudad to yellow discal patch, or take the 

 form of a diffuse golden stripe near the disk) . Occasionally the 

 lateral borders are bluish violet with a green stripe mediad in the 

 first fifth; the lateral borders are sometimes brownish coppery, 

 being lighter near the humeral angle, or the border may differ 

 from the disk only by a more decidedly copper violet hue. The 

 humeral macula is sometimes lacking in the female. The distal 

 spot is short triangular, horizontal or longer or narrower, having 

 an oblique direction toward the disk. Its inner half may be 

 narrowed or equal to the outer. The apical spot may be broad 

 or narrow, sometimes circular, sometimes transversely oval, and 

 not infrequently with its posterior margin concave. All the 

 spots may be white. 



Luzon, Laguna Province, Mount Maquiling, Mount Banahao, 

 and Paete : Tayabas Province, Dolores : Bataan Province, Mount 

 Limay. 



There are two subspecies of Prothyma hopkinsi. 

 Prothyma hopkinsi subsp. bakeri Horn. 



This subspecies was originally described as a true species. 

 At first view the fine blue color of the frons, vertex, pronotum, 

 and bases of the elytra, the very convex, rather globose middle 

 portion of the pronotum, the short and on their caudal half less 

 deeply and densely sculptured elytra seem to be quite character- 

 istic, but intermediate forms occur; for example, a specimen 

 from Polillo Island having exactly the same shape and sculpture 



