730 MR. M. JACOBY ON THE [NoV. 3, 



Oj'ama, 



This small species bears a great resemblance to several European 

 forms, notably A. fiaviceps and A. lutescens, from which several 

 finely expressed, but constant diiferences seem to separate it. The 

 head and thorax is always darker than in the named allied species, 

 the punctuation of the thorax is scarcely visible, its sides straighter, 

 the punctuation of the elytra is more distinct and absent near the 

 apex ; the reverse is tlie case in A. fiaviceps, which is also of a 

 much paler colour. Typical specimens of A. fiaviceps and A, 

 lutescens named by Allard are before me, but I cannot identify the 

 present insect with either of them. 



Aphthona semiviridis, sp. nov. 



Below black, above dark metallic green ; antennae, the anterior 

 legs and posterior tibiae pale fulvous ; thorax scarcely visibly, elytra 

 more strongly punctured. 



Length 1 line. 



Head impunctate ; the frontal tubercles quite obsolete. Antennae 

 nearly as long as the body, entirely fulvous or flavous, the second 

 and third joints equal. Thorax about one half broader than long, 

 subquadrate, the sides very slightly rounded near the apex, surface 

 extremely finely punctured when seen under a strong lens. Elytra 

 convex, nearly parallel in the male, more widened behind in the 

 female, the shoulders distinct but not prominent ; surface closely and 

 much more distinctly punctured than the thorax ; posterior femora 

 piceous, the others and the legs fulvous or flavous. 



Distinguished from other European species of similar colour of 

 the elytra by the fulvous antennse and fine punctuation of the 

 thorax, from A. atratula by the much greater length of the former, 

 and by the same character from A. pygmcea, Baly. The present 

 insect seems also closely allied to A. lacertosa, Rosenh., but differs 

 again in tlie entirely fulvous antennae and the almost impunctate 

 thorax. 



Aphthona pryeri, Baly. 



The five specimens obtained at Nikko and Kurigahara I must 

 refer to the above species, although they differ in the entirely 

 fulvous colour of the elytra, which in some specimens, however, have 

 the suture narrowly black (in the type the elytra are entirely of 

 that colour) ; there are no structural differences whatever to be 

 found in the variety, and I have no doubt about their identity with 

 Mr. Baly's species. 



Aphthona pygm^a, Baly. 



Mr. Baly described this species from a single specimen, which I 

 have now before me. The description gives the colour of the insect 

 as black, but I find the upper side of a decided greenish tint. The 

 elytra are more distinctly punctured than the thorax, and the 

 punctuation is arranged in very close semiregular lines. The speci- 

 mens obtamed this time by Mr. Lewis at Nikko, Kobe, and 



