Przyczynek do dokladniejszej znajomosci skqposzczeta: 
Amphichaeta leydigi (Tauber 1879) M. Kowalezvski 
1910 . — A contribution to the knowledge of the Oligo- 
chaet: Amphichaeta leydigi (Tauber 1879) Kowa¬ 
lezvski 1910. 
Note 
de M. M. KOWALEWSKl, 
présentée, dans la séance du 3 Avril 1916, par M. M. Siedlecki m. c. 
In a paper under the above title, published in Vol. LVI of 
the Transactions (Rozprawy) of the Math, and Nat. Sc. Class of 
the Academy of Science, Cracow, the author gives a detailed de¬ 
scription of Amphichaeta leydigi , a little representative of the family 
Chaetogastridae , found by him and mentioned as long ago as 1910 1 ). 
The paper is divided in three parts. In the first, the author explains 
the anatomy of the animal; in the second be adduces some bio¬ 
logical data, in the third he gives diagnoses of the genus Amphi¬ 
chaeta and its both species, as known at present: A. leydigi and 
A. sannio 2 ). These diagnoses which are cited further in extenso, and 
the accompanying figures 3 ), give a satisfactory idea of the more 
important details relating to the species A. leydigi and of the dif¬ 
ferences existing between it and the other aforesaid allied species; 
1 ) M. Kowale wski. Materyaly do fauny polskich skqposzczetöw wodnych 
(Oligochaeta aquatica). Czesc I. Sprawozd. Kora, fizyogr. Akad. Urn. w Krakowie, 
T. XLY, 1911; p. 58. 
— Materials for the Fauna of Polish Aquatic Oligochaeta. Part 1. Bull, de 
l’Acad. d. Sc. de Cracovie, Cl. Sc. Math.-Nat., Sér, B , Sc. Nat., 1910, p. 804. 
2 ) E. Kallstenius. Eine neue Art der Oligochaetengattung Amphichaeta 
Tauber. Biolog. Foren. Förhandl., IY, 1892, p. 42—45, fig. 1 — 5. 
s ) made from conserved specimens. 
