174 J. MURRAY 



The claws are quite like those of hufelandii, but they are more unequal and even 

 thicker. The egg is unknown. 



Habitat. Victoria, British Columbia ; Ottawa, Australia (?), Franz- Josef Land (?). 



The records for Australia and Franz-Josef Land are very uncertain, as they 

 depend on the characters of the pharynx only. There were claws on the only 

 specimen from Franz-Josef Land, but as they were only seen in profile, little can 

 be said about them. They do not appear to be so thick or so far united as in 

 M. virgatus. 



If the Franz-Josef Land specimen is M. virgatus, then the eggs are smooth and 

 are laid in the skin. Judging from the characters of the teeth, gullet, and claws, it 

 might be expected that the animal would prove to belong to the hufelandi group, 

 with rough eggs. There are very few species which combine the characters of 

 smooth eggs and hufelandi claws. M. rubens is the best instance known to me. 



The peculiar proportions of the " bacilla" in the pharynx, one short between two 

 long, distinguish M. virgatus from all related species. Only M. augusti, which is not 

 closely related, has a rather shorter middle rod. 



It is rarely permissible to describe a Macrobiotus of which the egg is unknown. 

 In this case the association of so many distinct characters the colour, the pharynx, 

 the claws seemed to justify a breach of the rule. When the eggs are found there 

 should be no difficulty in demonstrating their connection with this species. 



Macrobiotus sp. ? (Plate XXI. Fig. 60) 



Description. Size moderate, length 300 M. Colour grey ; no eyes. Gullet of 

 moderate width. Teeth strongly curved, with large furca. Pharynx shortly oval, 

 with conspicuous apophysis, and two "bacilla" in each row. The first, next the 

 gullet, is three times as long as broad. It is divided by a constriction into two 

 equal parts. The second is not quite twice as long as broad. There is no comma. 



The claws resemble exactly those of M. canadensis (Fig. 61c). The pairs are 

 unequal and diverge widely. Each pair has one claw longer than the other, and the 

 long claw of the larger pair is very slender, almost bristle-like. The long claw is 

 attached to the shorter claw near its base, showing a slight approach to the 

 Diphascon type. 



The association of several distinct characters marks this as a distinct species, but 

 as only one example was seen, and the egg is unknown, it is left in the meantime 

 unnamed. 



Habitat. Rocky Mountains 



