282 George: Some British Eatthniitcs {Trombidiid(c). 



[e] The legs are altogether remarkably different from either 

 of the other two sub-divisions. They are longer, and the hind 

 legs are considerably longer than the others ; and, instead of 

 being more or less flattened from side to side, they are round, 

 except where the claws are situated. They are studded with 

 mamillary elevations irregularly situated, and having a stiff 

 colourless curved bristle arising from their centres. Some of 

 these are bent at right angles (figs, D, e and f) ; others only 

 curved, but all point backwards. Perhaps they are best seen 

 on the last joint of the hind leg (fig. e). 



The front pair of legs are the next in length, and have the 

 distal joint somewhat swollen, club-like. The sternite (fig. h) 

 which is situated between the eyes, is rather short, and some- 

 thing like an inverted ' T,' (j_). It has on each side, about the 

 middle of the stem, a rather large stigma, and on the skin above 

 are a few stiff dark-coloured spines. The upper end of the 



sternite is also en- 

 larged, and has two 

 stigmata within the 

 enlargements. Con- 

 siderable care is re- 

 quired to get a good 

 mount of this organ. 

 Mr. Evans has sup- 

 plied me with three 

 examples of this 

 mite of different de- 

 grees of" develop- 

 ment. The last was 

 an adult female, and 

 contained several 

 round and rather 

 large red eggs. It 

 was found in damp 

 moss on a stone- 

 faced fence on the 

 road side near Edin- 

 burgh, on October 

 31st, 1908. There 

 was a wood on one 

 side, and open fields 

 on the other. About 

 29 years ago I found 

 two mites with simi- 

 lar legs, so that 

 doubtless this mite 

 is pretty widely dis- 

 tributed. 



a. Johnstoniana errans. 



b. Mandible. 



c. Palpus. 



d. Portion of hind leg. 



e. Last joint of hind leg. [angles. 



f. Hair 0.1 mamilla bent at right 



g. Curved hairs on body. 



h. Sternite. 



Na luraljst. 



