194 MR JAMES MURRAY ON 



their action is very like that of fingers. Arrived before some flocculent material, the 

 head is unfolded in a hesitating manner, the horns (or fingers) make a tapping motion 

 forward among the food-material, after which the beast either withdraws into its trunk 

 hurriedly, or goes on quietly feeding. The fingers seem to be moved by special 

 muscles, and act as if articulated at the bend, though nothing of this was actually seen. 



Rostrum. — The basal joint is large, the apical joint very small and short. 



Lamellae. — These exhibit the highest development of the Bdelloid lamellae known. 

 They are very large, and widely divergent laterally, resembling a pair of butterfly's 

 wings. Unlike those of most Bdelloids, which remain passively motionless when 

 extended, the lamellae of C. cornigera are waved about in the water with a very 

 graceful motion. This action has suggested that they are organs of smell. 



Rostral cilia. — The brush of cilia is well developed, but none of the other processes 

 of the tip were seen. 



Antenna. — This is very short. In the creeping attitude it looks like a little button 

 (fig. 22), or may be quite retracted. It can be extended to about one-quarter the 

 diameter of the neck. 



Stomach. — Walls much convoluted, food moulded into pellets. Though neither 

 Bryce nor Weber mentions this, their figures seem to indicate that they observed it. 



Intestine. — Rarely easy to observe in a pellet-maker, it was here conspicuous and 

 filled with pellets. 



Jaws. — Teeth 2/2. Lateral margin lightly convex, angled to anterior margin ; 

 posterior margin abruptly bent, forming a little point (fig. 25). 



Foot. — Joints, four. Spurs small, acuminate, curved, close at bases. Toes, three, 

 short, blunt. 



Yelk-mass. — Eight relatively large nuclei. 



Egg. — Small, thin-shelled, shortly oval. 



Habitat. — Among moss, most commonly Sphagnum, from near sea-level to nearly 

 4000 feet. Shores of Loch Ness, several places ; Ben Lawers ; East Kilbride, near 

 Glasgow ; Orkney, summit of Ward Hill, in Hoy, about 1500 feet. 



Length, creeping, 250 m. This is the same size as Mr Bryce's first example, but 

 that from Spitsbergen was much larger. 



Callidina minuta, sp. n. (Plate I. figs. 11, 12). 



Specific characters. — Very small. Very short, with broad trunk. Corona less than 

 neck, much less than collar. Central trunk broadly elliptical, first segment anterior to 

 central trunk bearing some small spines on lateral skin-folds. Posterior part of trunk 

 nodose. Foot short; spurs short, acuminate, meeting at bases. Teeth about 5/4 (5/5, 

 4/3). Food moulded into pellets. 



In form this curious little animal is an exact miniature of C. pulchra, Murray (6). 

 The only differences in detail which can be pointed out are that the first cervical does 



