I'ROC. ENT. SOC. WASH., VOL. 23, NO. 3, MAR., 1V2I 53 



.hiomala acnea Degeer, hy Schiodte named Euch/ont j'risc/iii 

 Fabricius, and Phyllopertha horticola Linnaeus, both Kuropcan 

 species, common in Denmark. His brief characterizations 

 of these larvae are as follows: 



Anomala aenea. 



"Epicranial suture with elevated margins. Antenna with length of subupical 

 joint in proportion to basal joint as 3:4. Maxillary palp with length of post- 

 apical joint in proportion to prebasal joint as 2:4 (the Latin text has 'articulus 

 secundus palporum maxillarium articulo primo duplo brevior, ' our prebasal 

 joint being identical with Schiodte's 'articulus primus' and our basal joint being 

 his 'palpiger'). Length of tibia in proportion to femur as 3:4. Claws of third 

 pair of legs abruptly shorter. Respiratory plate with oblong holes, placed in 

 transverse series. " 



Phyllopertha horticula. 



"Epicranial suture inconspicuous. Antenna with subapical joint as long as 

 basal joint. Maxillary palp with length of postapical joint in proportion to 

 prebasal joint as 3:4 (the Latin text has, 'articulus secundus palporum maxU- 

 larium articulo primo dimidio brevior'). Length of tibia in proportion to femur 

 as 2:4. All legs with claws of about same size. Respiratory plate with angulate- 

 rotundate holes, irregularly distributed." 



The following definition of Popillia japonica Newman is given 

 in exact conformity with Schiodte's formula. 



Popillia japonica. 



Epicranical suture with medianly slightly elevated margins (fig. 18). An- 

 tenna with subapical joint as long as basal joint. Maxillary palp with length of 

 subapical joint in proportion to prebasal joint as 3:4 (fig. 6). Length of tibia in 

 proportion to femur about equal (fig. 16). All legs with claws of about same 

 size. Respiratory plate with angulate-rotundate holes, irregularly distributed 

 (fig- 5). 



The Popillia larva is more closely allied to the Phyllopertha larva 

 than to the Anomala larva as these forms aredefined by Schiodte, 

 Popillia only differing from Phyllopertha in having slightly 

 elevated margins of epicranical suture ami proportionally some- 

 what longer tibia; trom Anomala it differs, besides in the pro- 

 portional length of the joints of the articulated organs mentioned, 

 in having equally long claws and a differently constructed res 

 piratory plate. 



Systematic and Morphological Description of Popillia Japonica Newman. 



(Mature larva; in U. S. National Museum; from Rivcrron, 

 New jersey, 5 Nov., 1917; coll. \Vm. (). F.llis. Species reared.) 

 (Figs. 1 IS, 21, 23 and 24.) 



Length af mature larva, nearly 25 mm. ( =onc HH li I. 



