of the Species of Popillia. 35 



The normal form o( Popillia, as exhibited in P. bipunctatus, the 

 Trichius bipunctatus of Fabriciiis, is peculiar to the old continent, 

 and seems to be nearly confined to the intertropical regions. The 

 aberrant form, as exhibited in Poinllia sticticollis, appears to be 

 exclusively Mexican. 



I have divided this genus into groups, assigning to each cha- 

 racters for which I claim no higher importance than that of 

 convenience ; and I wish it particularly to be understood, that I 

 attacli to these characters no value whatever, for I doubt not 

 that I may be detected in having dismissed similar ones as of too 

 little weight, even for the establishment of a species. Still that 

 they are useful, will not, I think, be disallowed, and any guide 

 to the ready discrimination of species I have always found 

 acceptable. 



* Asiatic Group. 



Striae of the elytra typically 13 ; four strise on each side of 

 the suture, are distinct and uninterrupted ; the elytra have no 

 dorsal excavation ; terminal segment of the abdomen glabrous 

 and immaculate ; the legs are comparatively slender. 



1. Popi. Regina. 



Omnino Icet^ viridi-cenea, glabra, sple7ididissima ; antennae nigrce ; 

 elytra profundi striata, lateribus medio impressis ; striis punctis 

 P,' 2**, cJ", 4", l^qiie integris, cceteris interruptis ; mesosternum 

 valde productum, curvatum. (Corp. long. •? unc, lat. • 4 unc.) 



Colour. — This brilliant insect is entirely of a resplendent green 

 colour, with black antennae. 



Sculpture. — Head thickly punctured anteriorly; the prothorax 

 has some very minute scattered punctures on its disk, and 

 others deeper and more conspicuous near its margin : each 

 elytron has thirteen striae, of these the four nearest to the 

 suture are uninterrupted ; the fifth is imperfect and inter- 

 rupted, it occupies the summit of a raised space between the 

 fourth and sixth, which last is imperfect towards the apex of 

 the elytron ; the seventh is nearly entire ; the remainder are 

 variously interrupted. 



Received from the Nilghery Mountains, in the East Indies. 



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