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XVI. Descriptions of neio species of Tenthredinidae, 

 Ichneumonidas, Chrysididae, Formicidas, ^c. of 

 Japan. By Frederick Smith. 



[Read 6th April, 1874.] 



The majority of the insects described in the present paper 

 were collected by Mr. George Lewis during his residence 

 in Japan, the rest are in the collection of the British 

 Museum ; among these are species collected by Mr. Henry 

 Whiteley at Hakodadi, and others by Mr. R. Fortune in 

 North Japan, probably from Hakodadi also. The general 

 aspect of the collection is that of an European one, a single 

 exotic form only being found among them in the genus 

 Thyreodon. Several of the species of the genus Ichneu- 

 mon very closely resemble well-knoAvn English ones : Ich- 

 neumon coynatorius is the counterpart of the British 

 species T. Proteus; Troyus arroyans very closely ap- 

 proaches T. pepsoides of North China. 



The Tenthredinidce. are very interesting; many of them 

 also closely resemble European ones: Hylotoma niyritarsis 

 is extremely like H. violacea of Klug; Hylotoma imperator 

 greatly resembles //. enodis ; indeed, of the six species 

 of this genus described, five are close representatives of 

 British ones, whUst I have been unable to separate the 

 sixth from the Hylotoma payana of Panzer. Tenthredo 

 erra.tica appears to be identical with specimens from 

 Siberia, both probably being mere climatal varieties of 

 T. Jlavicornis of Fabricius. The common Tenthredo 

 scalaris is found in Japan, only differing in being rather 

 larger. Of three species of the genus Lyda one is almost 

 identical with L. inanita of Villiers, a common British 

 insect. 



All the IchneumonidcB are from Hiogo in South Japan; 

 the TenthredinidoB are partly from Hiogo and partly from 

 Hakodadi, in North Japan. 



TRANS. ENT. SOC. 1874. — PART III. (jULY.) 



