Some Rotifera of the Silckim Himalaya. By J. Murray. 641 



segments higher on it. As the case is believed to be secreted by 

 pores scattered all over the portion of the trunk to be protected, 

 the elongation indicates a great physiological change. Two seg- 

 ments of the neck must possess these pores, which in the type 

 produce no secretion. While many cases are smooth and evenly 

 tapering, some are distinctly bent at each of the extra neck- 

 segments, the portion below the lower bend being exactly like the 

 type case. 



Extremely abundant in one collection from Baghghora, 6000 ft. 

 Many were seen feeding. Type also frequent in many of the 

 samples. 



G. crenata Murray (7), var. nodosa var. n. (plate XIX. figs. 6a 

 to 6<?).— Distinguished from the type by the very large size of the 

 tubercles. These are about eight times the diameter of those of 

 the type. Only eight rows were counted in the length of the trunk. 

 They give the animal a remarkable appearance. It is likely to 

 prove of specific rank, but as it has not been seen to feed, and I 

 have detected no other peculiarity, I prefer to provisionally unite 

 it with G crenata. The bosses on the rump are as in the type, 

 but they are obscured by the large size of the adjoining tubercles. 

 In one sample only, Gokdhara, 3000 ft. 



Gallidina aspera Bryce (1). — Frequent in the two collections 

 from the greatest elevation, Darjiling 6500 ft., and Sinihul 8000 ft. 



G. lata Bryce (J). — The spurs were more acuminate and blunter 

 than in the type. Abundant in one sample from Sinihul, 8000 ft. 



G. leitgebii Zelinka (?). — A few examples from two stations at 

 6000 ft., Darjiling and Baghghora, are referred to this rather ob- 

 scure species. 



G. microcephala Murray (8). — One or two examples only from 

 Darjiling, 6000 ft. 



Gallidina formosa sp. n., plate XVIII. fig. 3a, 36. 



Specific characters. — Large, elongate, colour reddish, trunk and 

 first foot-joint covered with hemispherical processes of uniform 

 size, regularly arranged in longitudinal rows. Corona moderate, 

 disks with central papillee. Upper lip of two elevated rounded 

 processes, meeting in the middle line. Collar very prominent, a 

 prominent lateral fold overhanging the neck. Length of antenna 

 equal half diameter of neck. Teeth 2/2. Foot of four joints, spurs 

 acuminate, blunt, slightly separate at base ; toes three. Food not 

 moulded into pellets. Egg elliptical, with a rounded projection at 

 each pole. Length 480//,, diameter of corona 77//,, of neck 50/t, 

 centre of trunk 94//,, across jaws without wings 35//,, length of jaw 

 32//,, across spurs, point to point 23//,, tubercles 5-7//,. 



Closely related to G habita Bryce (£), the only species with 

 which it need be compared. The general form, corona, upper lip, 



