1885.] PHYTOPHAGOUS COLEOPTERA. OF JAPAN. 731 



Nagasaki I caunot well separate from A. pi/ffintea, although their 

 shape is a little more slender and elongate, and the punctuation of 

 the elytra rather more regularly arranged ; other differences I cannot 

 find. Numerous specimens were obtained this time, which are all 

 of a metallic dark greenish colour like the type ; the thorax has an 

 obsolete depression at the sides more or less distinctly visible, and its 

 punctuation seems also to be rather variable. 



Grenus Phyllotreta, Foudr. 



Phyllotreta tenebrosa, sp. nov. 



Black ; antennae and legs flavous ; posterior femora sometimes 

 darker ; thorax and elytra closely and distinctly punctured. 



Length 1-1 g line. 



Head with a few fine punctures at the vertex ; the frontal 

 tubercles distinctly raised, transversely oblique, bounded behind by 

 a deep groove. Carina very short and broad ; labrum more or less 

 testaceous. Antennae more than half the length of the body, 

 entirely flavous, the third joint one half longer than the second, but 

 shorter than the fourth. Thorax one half broader than long, tlie 

 sides distinctly rounded as well as the posterior margin, the anterior 

 one straight, the angles not produced ; surface closely and distinctly 

 punctured in some specimens, in others to a less extent. Elytra 

 very moderately convex, punctured like the thorax, but the punc- 

 tuation arranged in very close longitudinal rows ; the pygidium 

 slightly protruding beyond the apices of the elytra. Legs entirely 

 flavous, the first joint of the posterior tarsi as long as the two 

 following together. 



Kobe, Kumamoto, Yuyama. 



Smaller than P. funesta, Baly, and distinguished by the flavous 

 legs and antennae and the stronger punctuation. The posterior 

 femora are but slightly thickened and much less than is usual in 

 this genus, although sufficiently distinct for the recognition of the 

 species as belonging to the present family. In some specimens the 

 frontal tubercles are more or less flavous. The general colour of 

 the upper surface of the insect is black and shining ; the elytral 

 epipleurse are rather broad and continued below the middle. 



Genus Ch^tocnema, Steph. 



Ch^tocnema chalceola, sp. nov. 



Ovate, obscure aeneous, base of the antennae and the tibiae 

 flavous ; head finely granulate ; thorax closely punctured j elytra 

 strongly punctate-striate, the interstices impunctate, costate at the 

 sides. 



Length 1 line. 



Head very finely granulate, impunctate or with a few punctures 

 between the eyes ; no frontal tubercles ; carina broad and short. 

 Antennae about half the length of the body, the first four joints 

 fulvous, terminal joints and the upper side of the first fuscous or 

 black. Thorax more than twice as broad as long, the sides straight. 



