Some Rotifera of the Sikkim Himalaya. By J. Murray. 639 



size and ample corona, it differs in the form of spnrs and the dental 

 formula. P. plena, which has somewhat similar spurs, has a much 

 smaller corona, teeth 2/2, and upper lip of different form. 



Structures not referred to are as normal in the genus, or can be 

 best seen in the drawing. 



The animal is transparent, of a pale yellowish or reddish colour, 

 the skin-folds broad and faint. 



Abundant in one sample of moss, the dental formula was 

 invariably 3/3, so this number may be considered normal. 

 Baghghora, elevation 6000 ft. 



Philodina squamosa sp. n., plate XVIII. figs. 2a, 2b. 



Specific characters. — Small ; narrow brown eyes, trunk viscous, 

 secretion in form of thin irregular oblong plates, defined by the 

 longitudinal skin-folds and the division of the segments, corona 

 moderate, less than trunk, disks large, with moderate sulcus. 

 Antenna as long as diameter of neck, or longer. Foot short, 

 three-jointed, spurs moderate cones, toes four. Teeth 2/2. 



In size like P. humerosa (7),* it has most resemblance to the 

 group which includes that species. It differs from the three species 

 of the group in the possession of eyes, and in the viscous secretion. 

 Each plate has a median line, and looks like two pages of an open 

 book. The secretion is easily washed off. Owing to the habit of 

 holding the disks inclined to the dorsal side, the upper lip is not 

 properly seen, but it is hoped the species will be recognisable from 

 the sketch and description given. 



Darjiling, elevation 6000 ft., fairly abundant in one collection. 



P. citrina Ehr. — Abundant in collection from Darjiling, 

 6000 ft. Most of the examples were destitute of colour, but a few 

 were of the usual colour. The spurs were somewhat long for the 

 species. 



P. brevipes Murray. — This species hatched out abundantly 

 after the collections had been mixed, so that the precise locality 

 cannot be known. All were beautifully hyaline and free from 

 parasites. 



P. fiaviceps Bryce (4-). — In two collections from Darjiling and 

 Baghghora, 6000 ft. 



P. vorax Janson (S). — In two samples from near Darjiling, 

 6000 to 6500 ft., fairly abundant in one of them. 



Philodina laticeps Murray. — This parasite on Crustacea and 



Insects was found in one sample only, from Darjiling, 6000 ft. 



2+i 



It had more teeth than the type, formula = , the additional 



Jr i + 2 + i 



teeth slender. The host was not found. 



* The figures in brackets refer to list of literature at end of paper. 



2 U 2 



