EDITORIAL 99 



identified by Doris L. Mackinnon from the food canal of the 

 larvae ("leather-jackets") of Scottish Crane-Flies, and in a 

 recent paper the authoress draws attention to a new species 

 of Amoeba, Lb'schia Jiartmanni, discovered in this limited 

 field. 1 



Naturalists who are interested in worms will find in the 

 February journals two papers worthy of perusal. The first 

 is a very readable account of the natural history of 

 Planarians by R. H. Whitehouse. 2 Many interesting details 

 are given of the habits and habitats of these lowly organised, 

 creatures, which seldom measure in this country an inch in 

 length. The second paper we refer to is an account of the 

 Leeches of the Glasgow district, by L. A. L. King. 3 Seven 

 species are here recorded, of which two are marine and five 

 fresh-water. Each species is briefly described, and an outline 

 given of its habits. 



Entomologists, as usual, have many papers to consult. 

 Perhaps the most important of these, from a general point of 

 view, is the third part of the " Preliminary Studies on the 

 Biology of the Bed-Bug, Cimex lectularius, Linn," by A. A. 

 Girault, of the University of Illinois. 4 This article is in the 

 main devoted to observations made upon several mating 

 pairs kept in confinement, and contains many interesting 

 details as to the number of eggs laid by different individuals, 

 with full particulars concerning the times of deposition. 

 Another paper of importance to students of parasitic insects 

 is one published by James Waterston, entitled " Some Records 

 of Scottish Siphonaptera." 5 In the first instalment (all that 

 has yet appeared) four species are recorded, from many 

 localities, with full particulars regarding the hosts upon which 

 the various specimens were found. 



1 Archiv f. Protistenkunde, vol. xxxii., 1914, 267. 



2 Irish Naturalist, February 19 14, pp. 41-47- 



3 Glasgow Naturalist, February 1914, pp. 39-47- 



4 Journ. Economic Biology, March 1914, PP- 25-45- 



5 Ent. Mo. Mag., April 1914, pp. 88-91. 



