1885.] PHYTOPHAGOUS COLEOPTERA OF JAPAN. 733 



at the sides nearly confluent. Elytra convex, narrowed at the apices, 

 deeply and regularly punctured, the interstices slightly costate at the 

 sides and sparingly impressed with fine punctures ; posterior femora 

 aeneous, the tibiEE and the other legs fulvous. 



Hakodate. A single specimen. 



The comparatively large size of this insect, the rugosely punctured 

 head without any raised tubercles, and the fulvous legs and antennae 

 separate it from its many congeners. 



Ch^tocnema AURiFRONS, sp. nov. 



Below blackish eeneons ; antennae black, the basal joint fulvous ; 

 head cupreous, granulose-punctate ; thorax and elytra violaceous 

 blue, the former strongly punctured, the latter deeply punctate- 

 striate. 



Var. Head and thorax aeneous, elytra light blue. 



Length 1 1 line. 



Head obscure cupreous, finely granulose and very closely punc- 

 tured ; no frontal tubercles. Antennae half the length of tlie body, 

 the two lower joints fulvous, the rest black, third and fourth joints 

 equal. Thorax twice as broad as long, widened at the middle, the 

 sides straight, surface as closely but more strongly punctured than 

 the head, the punctures semiconfluent at the sides. Elytra widened 

 towards the middle, narrowed at the apices, very strongly and regularly 

 punctate-striate, the interstices slightly convex at the sides ; femora 

 greenish aeneous ; tibiae fulvous, the anterior ones stained with 

 greenish aeneous. 



Oguma. Three specimens. 



The colour of the head and that of the thorax and elytra separates 

 this species from an}' of its congeners. In the variety, which is of 

 smaller size, the entire thorax is of the same metallic aeneous colour 

 as the head, and the elytra are bright blue, but structural differences 

 I am not able to see. 



Genus Hyphasis, Harold. 



Hyphasis inconstans, sp. nov. (Plate XLVI. fig. 1.) 



Fulvous or piceous ; the seven last joints of the antennae black; 

 thorax finely and remotely, elytra more distinctly and very closely 

 punctured. 



Length |-1 line. 



Head with fine longitudinal striae at the vertex when seen under 

 a strong lens, obsoletely depressed between the eyes ; frontal 

 tubercles strongly raised, rather elongate ; penultimate joint of the 

 palpi thickened, the terminal one acute. Antennte about half the 

 length of the body, the four or five lower joints fulvous, the rest 

 black, second joint much thicker than the third, but not longer. 

 Thorax transverse, widened at the middle, the sides straight, oblique 

 at the anterior angles, the disk covered with fine but not closely 

 arranged punctures. Elytra with a narrow lateral margin, very 

 closely punctured, the space near the suture slightly wrinkled, 

 piceous or fulvous ; the thorax of a more reddish fulvous. Metatarsus 



Proc. Zool. Soc— 18S5, No. XLVIIL 48 



