8. Abstammungslehre. 849 



1832) Calman, W. T. (British Museum [Natural Bistory]), The Resear- 

 ches of Bouvier and Bordage od Mutations in Crustacea of the 

 Family Atyidae. 



Quart. Journ. töicr. Bcience 55,4. p. 785 -797. 1910.) 

 Reviews the work of Bouvier and Bordage (1904—1909) which sug.t:- 

 tbat char acters regarded by systematists as of generic importance are muta- 

 tions. The genera Atya and Ortmannia are separate«! by differences in the 

 chelipeds, but it is found tliat certain species are dimorphic in this respect, 

 and oscillate between one generic group and the other, the two forms nccur- 

 ring together. Bordage succeeded in rearing young from several females of 

 Ortmannia; in some cases all bad the Ortmannia type, but in one experi- 

 ment of sixteen young ten were like the parenl and six of the Atya type. 

 The conditions of experiment were not quite satisf actory , and the author 

 hopes it will be repeated. After amputation of the chelipeds of Atya 

 limbs of the Ortmannia type were regenerated, but returned to the Atya form 

 after the next moult. A similar dimorphism possibly exists in related ge- 

 nera from Tanganyika and elsewhere. Doncaster (Cambridge). 



Nriruin-Jard, E., Premiere capture d'un Larus Philadelphia 

 but les cot es de la Vendee. 

 (Bulletin socieYe" seiences naturelles Ouest France, 10, p. 97 — 100, 1 figure dans le 



texte. 1910.) 

 Relation de la capture d'un Larus Philadelphia au bourg de l'Aiguillon- 

 sur-Mer (Vendee). Cette espece, qui niche au Canada et s'avance en hiver 

 jusqu'aux Bermudes, n*avait jamais ete signalie en France. 



Louis Germain (Paris). 



1834) Mechau, W. E. (Comm. of Fisheries of Pennsylvania), Observations 

 on the small-mouthed blak bars during the spawning season 

 of 1910. 



(40. Ann. Meeting of the American Fisheries Society. New York. Sept. 1910.) 



Hussakof (New York). 



1835) Hussakof, L. (American Museum of Natural History), On the spoon- 

 bill fishery of the lover Mississippi. 



(40. Ann. Meeting of the American Fisheries Society New York. Sept. 1910.) 

 The spoonbill is one of the most remarkable Fishes found in the American 

 waters. YVithin the past decade it has become of economic importance and 

 is fished at several points along the Mississippi and Ohio Rivrs. It is chiefly 

 valuable for the voe which is said to make the most excellent caviar in the 

 world. Tlie author encounted his personal experience while with a apoonbill 

 fisherman in the State of Mississippi in the year of 1910. 



Hussakof (New York). 



1830) Berg, L. (Moskau), Die Fauna des Baikalsees und ihr Ur- 

 sprung. 



(Biologische Zeitschr. 1.1. p. 10— 43. 1910.) 



Zur Fauna des Baikalsees gehören 1. die Formen, die sich im Baikalsee 

 selbsl während seiner zoologischen Geschichte entwickelt haben (Oligochaeten, 

 Fische aus den Familien der Comephoridae, Cattocomephoridae und die Unter- 

 familie Abyssoeotoni, einige Mollusken); 2. die Reste der verschiedenartigen 

 obertertiären Süßwasserfauna von Sibirien und. vielleicht, von Innerasien. Es 

 wird dabei auf das Vorhandensein einer Art von der Molluskengattung Choam- 

 phalus in dem mazedonischen Ochridasee verwiesen; dieser See enthält außer- 



