Some Rotifera of the Sikkim Himalaya. By J. Murray. 643 



grains of sand were so regularly arranged along the skinfolds, with 

 larger pieces at prominent angles, that it seemed as though the 

 animal had some power of selection. 



Var. fimbriate/, var. n. (plate XIX. iigs. 7a to 7c). — The anterior 

 portion of the trunk is expanded into a large ruff. The longitudinal 

 skinfolds from this ruff to the pre-anal segment are fimbriate with 

 little close-set processes, which are very large at the more pro- 

 tuberant segments, the ruff, the next segment to it, the fourth 

 central, and the pre-anal. These processes are apparently the result 

 of a secretion, but their definite form and symmetry of arrange- 

 ment are remarkable. The processes on the neck, at each side of 

 the antenna, are large and bifid. 



A variety (fig. 8) has the spurs short, widely divergent, and 

 free from the stippling which characterises the type. 



Rotifer vulgaris Schrank. — One example was found in the 

 mixed collection, so that precise locality and elevation are 

 unknown. 



Adineta vaga Davis. — Variety minor Bryce, which is said to 

 be Davis's type, found at one station, Gokdhara, 3000 ft., variety 

 major Bryce, Sinihul, 8000 ft., and Darjiling, 6000 ft. 



A. longicomis sp. n. (plate XVIII. figs. 5a to 5c). — Small, 

 rather short, form similar to that of A. vaga Davis (type = var. 

 minor Bryce). Spurs relatively longer than in any of the other 

 species (about ^th of total length), very slender and acute, 

 separated by a short, straight interspace. Head and rostrum of 

 peculiar form, best seen in the figure (5a). Length about 300 /m, 

 spurs 18 fx. The detail of the rostrum was not fully made out, 

 but its form is as shown. Abundant at Gokdhara, 3000 ft. 



Ploima. 



Fitrcularia rectangularis Glascott. — One example, Darjiling, 

 6000 ft. 



Stephanops tenelhts Bryce (J) (for figure see 9, plate v., fig. 19). 

 — One example, Gokdhara, 3000 ft. Broader than usual in the 

 middle of the trunk, making the general form rhomboid. 



Colurus leptus Gosse. — In the mixed collection, abundant. 



Monostyla lunaris. — Frequent in samples from Baghghora. 



Brachionus urceolaris Ehr. — In mixed collection, one example. 



Besides these five species, there were two species of Diaschiza, 

 and two of Monostyla, which I was unable to identify. 



LlTEEATUEE. 



1. Bryce, D.— On the Macrotraehelous Callidinm. Journ. Quekett Micr. 



Club, ser. 2, v. (1892) p. 15. 



2. „ Further Notes on Macrotraehelous UaMidinss. Op. cit., 



ser. 2, v. (1894) p. 436. 



