of the Species of Popillia. 49 



28. POPI. SEMIRUFA. 



Ferruginea ; antennarum capitulus, capitis vertex, prothoracis discus, 

 elytra tola, protibice omnino, vietatibiarum apices, tarsique 

 undique omnes nigra. (Corp. long. '425 unc, lat. '25 unc.) 



Colour. — Clypeus ferruginous, crown of the head black ; antennae 

 ferruginous, with the lamellae black ; prothorax black in the 

 centre ; the lateral margins broadly ferruginous ; elytra 

 entirely black ; the under side is entirely ferruginous ; the 

 legs also are ferruginous ; the fore tibiae, the apex of the 

 hind tibiae, and all the tarsi, being black. The terminal seg- 

 ment of the abdomen above is perfectly immaculate. 

 Sculpture. — As in P. sticticolUs, and P. vidua. 

 Inhabits Mexico. 



The extreme similarity in the sculpture of these three species 

 leads me to suspect the invalidity of the distinctions, which I have 

 derived from colour only. 



******* 3Iexican Group. 



Striae of the elytra 9, very deep, sulciform, the two nearest the 

 external margin sesquialterous ; the terminal segment of the ab- 

 domen above is pilose, but perfectly immaculate. 



29. Popi. Castor. 



Castanea ; prothoracis discus rugosus, viargincs ochracci ; elytra 

 sulcata, sulci 2}rofunde jmncti, elytrorum humeri nigri. (Corp. 

 long. '28 unc, lat. '115 unc.) 



Colour. — Head and antennae brown ; the prothorax brown, with 

 a slender margin of pale yellow completely surrounding it ; 

 the scutellum is brown, with a green margin ; elytra pale 

 ochraceous, with the shoulders black ; at the suture, and 

 also towards the apex of each, is a darker shade ; the under 

 side is piceous, and very hairy ; the legs are bi-own, with 

 piceous tarsi. 



Sculpture. — Head thickly and regularly punctured ; prothorax 

 completely rugose, with large, deep and confluent punctures ; 

 scutellum with deep, but not crowded punctures ; elytra 

 with nine deep punctured sulci, the two on each side nearest 

 the margin being sesquialterous. 



Inhabits Mexico. 



VOL. III. E 



