THE ENTOMOLOGIST. 267 



many species of China and Japan, and even new species of 

 tropical forms. Of the species he forms five divisions, 

 omitting those which inhabit the whole of Europe. The first 

 division comprises the species that are found in nearly all 

 Europe : twenty-three species, which inhabit equally the 

 higher and lower part of the Amur. The second division 

 includes the species that are somewhat peculiar to North 

 Europe : thirteen species, which are found with those of the 

 first division. In the third division are twenty-three species, 

 which have analogy with those of Central Europe, and nearly 

 all of them inhabit the south part of the Amur. The fourth 

 division has fourteen species, which are found more especially 

 in Eastern Europe. The seven species of the fifth division 

 are found in South Europe, and not elsewhere on that conti- 

 nent. Of the 212 species enumerated, 38 are new; and in 

 the whole number there are — 154 European forms, 30 forms 

 of the Russian Fauna, 28 forms wholly strangers to Europe. 

 Menetries observes that some species are found more towards 

 the north in the east than they are in the west, and that the 

 sight of half-tropical forms, in the 47*^ of latitude, is not 

 less remarkable. 



In the Ent. Zeit. Stett. vol. xix.. Prof. Stal has published 

 a list of 111 Hemiptera inhabiting Siberia and Russian 

 North America. Of these 36 are new, and 75 are European. 

 Of the 36, twenty-six are Siberian, one of Siberia and 

 Kamtschatka, one of Kamtschatka, and eight of Sitka. 



Diptera generally being more quick-witted, sharp-sighted, 

 or impulsive, than any other insects, take the lead in migra- 

 tion, and in extending their influence over new regions. A 

 large part of them are especially useful in the development of 

 flowers and thus advancing vegetation, and in promoting the 

 healthiness of a climate by removing what has an opposite 

 tendency. Numerous British species of this order appear to 

 be also inhabitants of Amurland. 



Feancis Walker. 



Entomological Notes, Captures, S^c. 



Desc7'ipiioii of the Larva of Xanlhia citrago. — On the 

 9th May, 1871, I received from Mr. John Firth, of Cleck- 

 heaton, a larva of this species; and, on the 13lh of May of 



o2 



