466 BRITISH ORIBATIDJ]. 



All these hairs are very caducent. The creature is 

 often seen without any except those on the hind 

 margin. 



Distribution. — The species is generally distributed 

 and not uncommon. 1 have found the adult in moss 

 on land, the nymph I have found in the same situation 

 and also on sphagnmn under water ; it seems to thrive 

 equally well in either locality. I have not ever found 

 the adult in water, but one or two which I placed on 

 sphagnum under water and kept there for some time 

 did not appear to experience any inconvenience. The 

 species has been recorded in France, Germany, and 

 Italy. 



Genus— EREM^US,* Koch. 



Apterogasterin(E with cephalothorax anchylosed to 

 abdomen ; without lamellae ; with the notogaster arched 

 or concave in the centre, the margin being thin, and 

 raised or depressed, and the postero-lateral parts of 

 the dorsal plate of the abdomen greatly turned over 

 on to the ventral surface, and greatly overlapping the 

 ventral plate, which narrows to a point posteriorly. 

 All known species are tridactyle. 



I am not sure that it would not be better to elimi- 

 nate the name of this genus, but the name is so well 

 known for certain species that it would be a pity to 

 lose it unless it be necessary to do so. The position 

 is as follows : 



Koch originated the genus. His definition of it is 

 really not sufficient to enable anyone to say what 

 belongs to it ; he gives only two species, viz. E. 

 hepaticus and E. ohlongus. I do not see upon what 

 ground Koch separated these two creatures from 

 Notasjns, which he calls Op}yia ; neither the difference 

 between his descriptions of the genera nor between 



* 'Hpf/iatof, quiet. 



