South American Rotifera. By J. Murray. 231) 



Chile allowed a fuller study to be made, and requires the diagnosis 

 to be modified, and the species to be transferred to another genus. 



The curved lateral processes prove to be the product of secre- 

 tion, not fleshy, as I supposed. The mucus which forms them 

 issues from very large pores, and the striate appearance of thetliick 

 outer edge of the process is simply due to successive thin layers 

 extruded. 



The species is not related to Gallidina multispinosa as I 

 thought, but to M. incrassata. It is, indeed, the closest relative 

 to that species. 



Hahrotrocha angusticollis Murray {lo). 



Besides the type, which is common in Bolivia, Peru, and 

 Brazil, the variety aUenuata, first discovered in India {18), occurred 

 near Sandia in Peru. Length of case, 240 fx. 



H. acornis Murray {:^0). 



The Brazilian examples were obtained on the summit of Cor- 

 covada mountain, and agreed perfectly with the type from Africa. 



If. fiisca Bryce (1). Plate IX, figs. 2a-2b. 



Apparently a rare species, as I understand no one but its 

 discoverer has seen the animal. Having very distinct characters, 

 it would not readily be overlooked by anyone acquainted with 

 the Bdelloids. 



I obtained some sketches, which supplement in some par- 

 ticulars those given by Bryce. The first neck-segment in the 

 South American examples bears five thickenings, three large 

 rounded ones, corresponding to those noted by Bryce, and two 

 smaller lateral ones. The collar and corona are of equal width, 

 and the neck is wider. There are central setie on the disks, borne 

 •on conical papillae. 



Summit of Corcovada, Eio de Janeiro. 



Hahrotrocha cuneata sp. n. Plate IX, figs. 4a-4c^. 



Specific Characters. — Very small, longitudinal plicae wide and 

 shallow ; corona relatively large, disks separated by deep sulcus, 

 upper lip rounded, not reaching as high as bottom of sulcus, collar 

 not prominent ; rostrum and antenna very short ; teeth 4/3 ; rump 

 distinct, short, with prominent pair of longitudinal folds ; foot 

 3-jointed, spur-bearing segment wedge-shaped, spurs small cones, 

 separated by wide convex interspace. 



General Description. — Length, when feeding, with the foot 



