Z b a dan nad skqposzczetami . — Notes on Oligochaeta. 
Note 
de M. M. KOWALEWSKt m. c., 
présentée dans la séance du 8 Avril 1918. 
(Planche 9). 
(Extrait). 
; Several details concerning the internal anatomy of Oligochaeta , 
as described by the author in the present paper, are sufficiently 
evident from the accompanying figures. Hence only the more im¬ 
portant data adduced in the four parts (of which the paper consists) 
are mentioned here. 
I. Genital organs in Dero limosa Leidy 1852. 
(Fig. 1, 2). 
The author’s observations agree with those published by Bed- 
dard, less closely with the results of Schuster. The true 
shape of the atrium is represented by Fig. 2. No genital setae are 
present; this was ascertained on eight specimens. In two specimens 
a little additional spermatheca was observed in the segment IV, 
on one side of the body of the animal 
II. Tubifex montanus sp. nov. 
(Fig. 3—5). 
This new species was found in a lake, in the Tatra mountains. 
Only two sexual specimens were collected, both in a state of ad 
vanced maturity. 
Length of the body about 30 mm. Setae like those of Tubifex 
templetoni Southern 1909, except the dorsal bifid setae which are 
9* 
