TARDIGRADA: NEW ZEALAND 119 



teeth and no rods in the pharynx). It is pretty certain that it is distinct from 

 all known species. The position of the pharyngeal bulb indicates that it is a 

 Macrobiotus, not a Diphascon. There are only a few species having claws of the 

 Diphaacon type, and none of them have such strong claws as this animal. They 

 more resemble those of some of the larger northern species of Diphascon, such as 

 D. spitzbergense (27). The length was 550 /*. 



Diphascon chilenense, Plate ? (23) (Plate XV. Figs. 11, lib) 



This species is noted from the Mount Cook district and from Stewart Island. It 

 is recorded as doubtfully D. chilenense on account of the characters of the claws, 

 which appear to be intermediate between the true Diphascon and the hufelandi 

 types. The two pairs are not very unequal in size, and the claws of each appear to 

 be united for some distance above the base. As the animal was a very small one, 

 and the claws relatively very small, it could not be satisfactorily determined whether 

 the structure of the larger pair was essentially that of the Diphascon type, which is 

 shown in Fig. 12 on the same plate. 



The pharynx (Fig. lla) has four round nuts in each row of thickenings, besides 

 the apophyses on the end of the gullet. This seems to be one more than in any 

 other Tardigrade, unless we regard the fourth nut as homologous with the " comma." 

 Plate figures four nuts, but does not show the apophysis. 



The example here figured was obtained by Dr. Mackay from a height of about 

 6000 feet on the Nun's Veil, a peak nearly 9000 feet high. 



Diphascon alpimtm, Murray (14) 



South Island only (Otira Gorge). Though discovered in Scotland, the species is 

 best known as a southern and Antarctic species. It occurs on both sides of the 

 Antarctic, on the Continent at Graham Land, on the adjacent islands, and also in 

 Victoria Land. 



Diphascon scoticum, Murray (11) 



In Stewart Island only. The species is found in both Polar Regions and in 

 several places between. In the north it attains a high latitude in Spitsbergen and 

 Franz- Josef Land. In the south Richters has found it in Possession Island (recorded 

 as D. crozetense), and in the South Shetlands. It is also in Australia, Hawaii, and 

 Canada. 



REMARKS ON THE TARDIGRADE FAUNA OF NEW ZEALAND 



Its composition. For a country of such extent, so isolated, and offering such a 

 variety in climate and conditions, the Tardigrade fauna appears poor in species, and 



