39 22 Proceedings of the Royal Irish Academy. 



Sub-fani. Lebeetiinae. 

 Lebertia insignis Neunian. 

 G-lendalough Lake, ConnerQara, September. 



Lebertia porosa Sig. Thor. 

 Owenwee Kiver, Belelare; Bunowen Biver, Louisburgh. 



Lebertia fimbriata Sig. Thor. (Plate III., fig. 31.) 



Clare Island, in peaty drains on the north-east side of the island between 

 the Harbour and Maum, June, 1909. 



Two examples occurred in the above-mentioned locality. They are of a 

 golden-brown colour, with darker markings on the dorsal surface ; the legs 

 and palps are greyish. 



This is one of the smallest species of the genus Lebertia ; and it may be 

 easily recognized by the elongate form, indented front margin of the body, 

 and the scarcity of swimming-hairs. A full description of this mite will be 

 found in the " Zoologischer Anzeiger " (29, pp. 41-52). 



Although the Clare Island specimens (Plate III., fig. 31) agree in 

 measurement (length -896, breadth - 614 mm.) with Thor's description of this 

 species, yet they are decidedly more elongate in form, and the epimera are 

 narrower than is shown in his figures in the paper just referred to. The 

 latter difference may, however, he due to the process of mounting of the 

 original specimens from which these drawings were made, as a slight 

 pressure causes the epimera to appear wider. The "swimming-hairs are 

 greatly reduced ; there are only two of these, placed on the fifth segment of 

 the last pair of legs, in the Irish specimens. 



Distribution. — Lebertia tvrribriata is apparently a local species ; it has not 

 been previously recorded from the Britannic area, nor. as far as I can 

 ascertain, from any European country except Norway, where the original 

 specimens were found by Dr. Sig. Thor near Kristiania and Bergen. 



Frontipoda musculus (0. F. Mull.). 

 One example found in Lough Bann, near Louisburgh, July, 1910. 



Frontipoda Carpenteri nov. sp. 1 (Plate II., fig. 12a -e.) 

 This new and very distinct species must be compared with F. m uscidus, 



1 Named in honour of Professor G. H. Carpenter, b.sc, m.k.i.a., whose researches on the 

 arachnid fauna of Ireland are well known. 



