SCOTTISH TARDIGRADA, COLLECTED BY THE LAKE SURVEY. 663 



double rod, and a single shorter rod in each row of thickenings. Egg spiny, spines 

 pretty large, close together, acuminate. Teeth curved, with very large furca. 



Length, of adult 430m, claws of young just hatched 24/*, of pharynx of young 35m, 

 diameter of egg over spines 130m. 



The adult is hardly distinguishable from M. dispar, but the egg is quite different, 

 and more resembles that of M. echinogenitus, while it is chiefly distinguishable by its 

 larger size from that of M. harmsworthi, recently discovered in Franz Josef Land, and 

 now known to be in Shetland. 



Ronas Hill, Shetland, September 1906. Spitsbergen (Bruce), 1906. 



M. pullari, sp. n. (Plate II. figs. 8a to 8c.) 



Specific characters. — Large, brown ; claws of echinogenitus type, joined at base 

 only, supplementary points strong ; teeth stout, curved ; pharynx of hufelandi type, 

 viz. with nut, long double rod, and shorter single rod in each row, and no " comma." 

 Eggs spiny, round ; spines short, sharp cones standing a little apart, smooth. 



Length up to 570m, pharynx 48m long. The dark colour is arranged in longitud- 

 inal and transverse bands as in M. oberhauseri, but the colour is different. The eggs 

 are very often laid all at one time, and are found adhering in clusters. A whole " clutch " 

 of them is sometimes accidentally included in the cast skin, and oval eggs are not rare. 

 The round egg is not distinguishable from that of M. dispar, and measures 75m over 

 the spines, the oval egg measuring 90m long diameter over spines. 



Localities. — Gryfe Reservoir, near Greenock ; Loch Ness ; Forth area (Evans). 



Similar eggs are known from various countries, but the identity of form of those of 

 M. pullari and M. dispar makes it impossible to identify from eggs alone. 



The species is named in memory and honour of Frederick Pullar, who with Sir 

 John Murray began the systematic survey of the Scottish Lochs. 



M. islandicus, Richters (18). 



The records under this name (6) proving to be erroneous, it is doubtful if the species 

 exists in Britain. Eggs with the peg-like processes have been found, but never with 

 sufficiently developed young. 



M. hastatus, sp. n. (Plate III. figs. 18a to lSd.) 



Specific characters. — Small ; claws of echinogenitus type, or a little inclined towards 

 the oberhauseri type, claws joined near the bases, one of each pair longer, and one long 

 claw larger than the other, pharynx of oberhauseri type, with nut joined to the gullet, 

 and two equal rods, twice as broad as long, in each row. Egg spiny, each spine in 

 optical section like a fleur-de-lis, the spines imbedded in hyaline matter, from which 

 only the central spike of the fleur-de-lis projects. 



Diameter of egg over spines 70m. The eggs are round or oval, and. were found in 

 large numbers, always three together, in the cast shells of Alonella nana. This 



