by the absence of big game, since they would take to feeding on the 

 smaller mammals ; (2) any big step taken by artificial means and 

 contrary to the course of nature is bound to have compensating effects 

 in another and perhaps disadvantageous direction to readjust the 

 balance. The author cites instances of this. 



Gilchrist (J. D. F.). Marine Biological Report, Union of S. Africa, 

 Prov. of the Cape of Good Hope, Cape Town, 1913, no. 1, 

 pp. 67-70, 1 pi. 



It is doubtful whether the well-known fish from Barbados, known 

 as " Millions," Libistes poeciloides, can become established in South 

 Africa, though individuals have survived there for some months. 

 Other fish which might prove of use in South Africa for the destruction 

 of mosquito larvae and upon which investigation from this point of 

 view might be repaid, are species of Tilapia from Pretoria ; species of 

 Fundulus from German East Africa, Longo Bay, Seychelles, Zanzibar, 

 Victoria Nyanza and Lake Chaia ; species of Haplochilus from Nyasa 

 and Albert Nyanza ; and species of Galaxias from the south-west of the 

 Cape Province. 



Johnson (C. W.). Insects of Florida.— 5?<//. Amer. Mas. Nat. Hist., 

 New York, xxxii, 1913, pp. 37-90. 



A list is given of the Diptera of Florida, and includes 845 species 

 representing 50 famihes with a short general account of their 

 distribution. Of economic importance as containing species that 

 are recognised as potential blood-suckers, are the families Chirono- 

 MIDAE, including 7 Ceratopogon, 5 Cidicoides, and 3 JohannsenieUa ; 

 CuLiciDAE, represented by 31 species, including 4 Anopheles, 1 

 Megarhinus, 1 Psorophora, 3 Janthinosoma, 1 Stegomyia, 8 Acdes, 

 1 Culiseta, 7 Cnhx, 2 Mansonia, 1 Uranstaenia, 1 Deinocerites, and 

 1 Wyeomyia ; Simuliidae, represented by 1 species of SiinuUion, 

 and Tabanidae, represented by 49 species, including 11 Chrysops, 

 1 Haematopota, 1 Diachloriis, and 30 Tabanus ; a new variety of 

 Chrysops vittata is described, for which the author proposes the name 

 C. vittatus var. Floridanus. 



Schneider (P.). Beitrag zur Kenntnis der Culiciden in der Umgebung 

 von Bonn. [A contribution to the Knowledge of the CuUcidae in 

 the neighbourhood of ^own.^—V erhand. Naturhist. Ver. Preuss. 

 Rheinlande u. Westfalens, Bonn, Ixx, (1913), no. 1. 1914, pp. 1-54. 



The author found the following species within a radius of 15 miles 

 round Bonn : — Anopheles macidipennis, Mg., A. bif ureal us, L., 

 A. nigripes, Staeger, Aedes cinereus, Mg., Culex pipieus, L., C. territans. 

 Walk., Theobaldia annulata, Schr., Culcx cantans, Mg.. C. vexans, Mg., 

 C. annulipes, Mg., C. ntorsitans, Theo., C. nciiiorosa, ]\Ig., C. lateralis, 

 Mg., C. stictica, Mg. (?), and C. ornata, Mg. {'.). U'ith the exception 

 of Theobaldia glaphy rapt era, Grabhamia dorsalis, (^idex rustica and 

 three uncertain German species, e.g. flavirostris, nearly all the species 

 found in Germany occur near Boim. German Culicidae closely 

 resemble those pf Belgium. A bibliographv of 84 works ])ul)lished 

 up to June 1912, is appended. 



