368 DAVID BRYCE ON THREE NEW SPECIES OF OALLIDINA. 



the genus Callidina. When feeding, the resemblance to the 

 pellet-making genus is again pronounced, the narrow corona 

 and the high upper lip being quite of the Habrotrocha type. 

 The '' interference " effects of the flashing cilia and the position 

 immediately below the upper lip of the inner edges of the barely^ 

 separated pedicels made it extremely diflicult to define with 

 reasonable certainty the true outline of the upper lip, but I 

 failed on repeated examinations to distinguish any trace of a 

 notch on the anterior margin. After feeding with carmine I 

 found that the stomach had a very delicate tube-like lumen,, 

 within which I could discern particles of pigment circling in the 

 typical manner. 



The species seems related to Callidina Ehrenhergi Janson, which 

 has the same combination of two-toothed rami, high, undivided 

 upper lip and spinous eggs ; but Janson's species is considerably 

 larger, the corona is proportionately wider, the upper lip is more 

 broadly rounded in front and the eggs are covered with numerous 

 spines almost crowded together. 



In C. nana the ^^^g is of the customary slightly flattened oval 

 form, but is sparsely covered with blunt spines varying in length 

 from 3 to 6 /x according to position, those near the poles being 

 longest, those near the centre the shortest. Including the spines- 

 the ^gg sketched measured about 70 />t long by 41 ^u wide. 



The animal is generally colourless, or nearly so, the skin more^ 

 or less finely stippled. It is restless when first put into a small 

 cell, but after a few days' isolation feeds quietly, and endures 

 confinement rather well. 



Maximum length, about 220 /x ; corona, 20 /x wide ; collar, 24 yot ; 

 spurs, about 5 /x long. 



Originally observed in Sphagnum from Epping Forest, later 

 in various ground mosses, inter alia in Thuidium tamariscinum^ 

 collected for me in St. Leonard's Forest by Mr. A. W. 

 Sheppard. 



Callidina concinna sp. nov. (PI. 12, Fig. 1). 



Specific Characters. Corona moderately narrow, scarcely ex- 

 ceeding collar, pedicels distinct, approximate or little separated. 

 Upper lip high with median notch. Rami two-toothed. Foot of 

 three joints; spurs short cones, divergent, w^th small or no 



