J. MURRAY ON WATER-BEARS, OR TARDIGRADA. 183 



The teeth, gullet and pharynx are similar to those of Echiniscus, 

 but the teeth are connected with the gullet by hearers, as in 

 Macrobiotics. There are no eye-spots. Marine. 



While most like Echiniscus, the teeth-bearers and unarmoured 

 body mark an approach to Macrobiotus, the seta a and its well- 

 developed basal palp, both raised on a papilla, show a resemblance 

 to Oreella. and Batlllipes, and the slender legs recall Microlyda 

 (= Lydella). 



Genus Batillipes Richters (45) (PI. 8, Figs, 4, ih). 



Like Echiniscus, but unarmoured; with well- developed head- 

 processes, but lacking the palps near the mouth. The striking 

 peculiarity of the animal is that it bears on each foot five slender 

 toes of unequal length, each ending in an expanded, somewhat 

 spoon-shaped body, the modified claw. The toes spring from a 

 very slender terminal joint of the leg. There are no eyes. 

 The body is plump and hyaline, colourless except the stomach. 

 The skin is finely papillose. The teeth, gullet and pharynx are 

 as in Echiniscus. The seta at the base of the head (seta a in 

 Echiniscus) is elevated on a papilla, from which springs also the 

 very largely developed palp. Richters' figures (44, 45) show 

 a stout lateral spine ( = e in Echiniscus), and on the fourth leg 

 a fine hair. Marine, among Facoids, near Kiel. 



The remarkable modified claws and the unusual number of 

 five on each foot easily separate this genus from all other water- 

 bears. The arrangement of the cirri on the head, and especially 

 the elevation of a and its palp on a conical process, are as in 

 Ualechiniscus and Oreella ; the possession of " toes " indicating 

 further afiinitv with Halechiniscus. 



Genus Oreella Murray (25) (PI. 8, Figs, la to Ic). 



Like Echiniscus, but without plates. The body is soft, as in 

 Macrohiotus, and is papillose dorsally. All the processes on the 

 head correspond to those of Echiniscus. The seta a at the base 

 of the head and the palp at the base are elevated on a common 

 papilla. The palps near the mouth are very small. There are 

 no eyes. The pharynx and teeth are as in Echiniscus, but the 

 teeth have hearers, as in Macrohiotus. The teeth are relatively 

 very short and the gullet rather wide. There are no processes 

 on the body, except a little terminal median point. The legs 



