660 MR JAMES MUERAY ON 



M. sattleri, Richters (15). (Plate IV. figs. 26a to 26c.) 



Description of the Scottish form. — Very small. Tubercles in 8 or 9 rows on the 

 posterior half of the body, about 4 tubercles in each transverse row, some small sharp 

 spines like those of M. papillifer. Back reticulate, in polygons of various sizes, 

 arrangement somewhat symmetrical, largest polygons central. Only simplex forms 

 seen. Claws equal, widely divergent. 



The pharynx of a precisely similar Indian form had a fixed nut and three free nuts, 

 just as in Spitsbergen form of M. tvberculatus. 



M. papillifer, Murray (6). 

 Eggs up to 6 in a skin. Stomach sometimes with blue granules. 



M. annulatus, Murray (6). 



When the skinful of eggs is carried, it is fixed to the centre of the top of the head, 

 where a little cluster of globules may represent a kind of cement gland. The original 

 figure (6) is in this respect inaccurate. Eggs sometimes 4, rarely 5. 



M. angusti, sp. n. (Plate IV. figs. 25a to 25d.) 



Specific characters. — Large, hyaline, with brownish stomach. Claws of echino- 

 genitus type, united near base, one claw of each pair longer. Teeth curved, with 

 bearers. Pharynx shortly oval, with 4 thickenings in each row — 1st, a nut, joined to 

 gullet ; 2nd, 3rd, and 4th, slender rods, the middle one rather shorter. No eyes. Eggs 

 oval, laid in the skin, 4 to 6 or more. 



Length 757m, pharynx 75m, claws 22m, egg 115m by 92m- 



This large species has no very close relatives. 



Bog pool near Fort- Augustus, 1904, abundant. 



M. coronifer, Richters. (Plate III. figs. 22a to 22c.) 



(16.) Very large : fat-cells golden-yellow. Crescent in front of claws, bearing a series 

 of curved spines. Pharynx shortly oval, thickenings three in each row, — 1st, a round 

 nut attached to gullet ; 2nd and 3rd, short rods, little longer than broad. Egg very 

 large, golden-yellow, elliptical, closely set with weak straight-pointed spines. 



The largest known Tardigrade, attaining 1 mm. in length. It was the first of that 

 interesting group having the crescent in front of the claws, discovered by Professor 

 Richters. As it has not yet been figured in any work in English, a short description 

 and figure are given here, Shetland, near top of Ronas Hill ; also on West Coast, few 

 examples, size 862m. 



M. crenulatus, Richtehs (19). 



Specific characters. — Large, hyaline or brown ; teeth stout, curved ; pharynx of 

 hufelandi type, with long double rod, short rod, and comma in each row ; claws of 



