144 THE ENTOMOLOGIST. 



Of the four hundred and seventy-eight species listed, more than 

 half belong to the Palaearctic Region. The Nearctic species number 

 some eighty to eighty-five, in addition to several that are common to 

 both Eegions. The Oriental and Australian Regions together contri- 

 bute about one hundred and twenty-five species. Only seventeen 

 species are recorded from the Neotropical and Ethiopian Regions, 

 seven from the former, and ten from the latter. 



It is interesting to note that of the species occurring in Britain 

 (about sixty in number) four — Psylla colorata, P. lowii, P. picta, and 

 P. venata — have not been detected in any other part of the world ; 

 whilst thirty of the species inhabiting Japan appear to be confined to 

 that country. 



Reference to literature, especially concerning Palaearctic species, is 

 full, and, in some cases, exhaustive. In the majority of instances the 

 food-plants are mentioned, and there is an index to these as well as 

 to the insects. 



Diptera Danica. Genera and Species of Flies hitherto Found, in 

 Denmark. By William Lundbeck. Part iv. DolichopodidaB. 

 Pp. 1-407. Text figures 130. Copenhagen: G. E. C. Gad. 

 London : Wesley & Son. 1912. 



The author states that pending further necessary subdivision of 

 the Dolichopodidae by Becker, who is now working on the family, he 

 has adopted the four subfamilies of the " Katalog d. palaarktschen 

 Diptern." The one hundred and seventy-two species, in thirty-five 

 genera, considered in the present volume are therefore grouped as 

 follows : — i. Dolichopodinae (9 genera, 81 species), ii. Diaphorinao 

 (4 genera, 22 species), iii. Rhaphiinae (5 genera, 22 species), iv. 

 HydrophorinaB (17 genera, 47 species). 



We note some synonymic changes, and one novelty — Dolichopus 

 varitibia ; the latter described from a male caught in Lyngby Mose 

 in 1911, and the only known specimen. 



Publication of this important work was commenced in 1907, and 

 Parts ii and iii appeared in 1908 and 1910 respectively. All were 

 duly noticed in the " Entomologist," but it may be again mentioned 

 that the text is in English, and that the bulk of the species so far 

 dealt with are to be found in the British Isles. 



Fourteenth Report of the State Entomologist of Minnesota for the 



Years 1911 and 1912. Eighth Report of F. L. Washburn. 



Pp. i-xiii and 1-114. Agricultural Experiment Station : St. 



Anthony Park, Minn. Dec. 1, 1912. 



Treats of Grasshoppers and other injurious insects and the 



methods adopted to destroy them or to control their depredations. 



In the case of Grasshoppers sodium arsenite spray has been found 



the most effective. 



In addition to numerous illustrations in the text, three excellent 

 plates in colour, representing specimens of some twenty species of 

 Acridiidae taken in Minnesota, are issued with the Report. There is 

 also a plate from a photograph, showing a small portion of a swarm 

 of South African Locusts. 



