Clare Island Survey — Acarinida. 39 15 



where there is a very strong current of water. The greatest altitude at which 

 I have taken the species is 1,500 feet in the stream flowing from Lough 

 Eighter on Carrantuohill mountain in Kerry. 



Sperchon glandulosus Koeuike. 

 Abundant in streams on Croaghpatrick in June and July. 



Sperchon undulosus Koenike. 



S. undulosus Koenike, 1907 (11). 



Streams on Croaghpatrick, June, 1909 ; stream flowing from Lough 

 Namucka, near Louisburgh, July, 1910. 



This mite is an addition to the recorded British species, and does not seem 

 to have been found since it was described from Germany by Dr. Koenike four 

 years ago. The four-disked genital area of the nymph is figured on Plate II., 

 fig. 19. 



Sperchon setiger Sig. Thor. 



In stream flowing from Lough Avullin, Clare Island. 



Pseudosperchon verrucosus (Protz). (Plate II., fig. 20.) 



Clare Island in small streams flowing from the hills; Croaghpatrick. 

 Found commonly in both of these localities in June and July. In the nymph 

 of this species the nodules on the surface of the body are arranged much as 

 in the adult mite. The provisional genital area is figured in the present 

 paper (PL II., fig. 20). 



Pseudosperchon verrucosus is an abundant species in Ireland ; it occurs 

 amongst mosses in mountain streams. 



Distribution — Norway; Germany; Switzerland; Italy; Scotland; Ireland. 



Fam. HYGEOBATIDAE. 



Sub-fam. Teutoniinae. 

 Teutonia primaria Koenike. 

 Owenwee Eiver at Belclare ; Carrownisky Eiver near Louisburgh. 



Limnesia fulgida C. L. Koch (Z. histrionica Herm.). 



Achill ; lakes at Westport, Belclare, and Louisburgh, and in the Galway 

 highlands. 



