39 44 Proceedings of the Royal Irish Academy. 



Plate III. 



Fig. 



23 Arrhenurus bipapillosus nov. sp. a, Dorsal view of male, b, Petiolus 



organ, c, Palp of male x 224. 



24 Arrhenurus battilifer Koenike var. dilatatus Halbt. a, Dorsal view of 



male, b, Petiolus x 168. c, Petiolus of typical form (Germany) for 

 comparison x 168. 



25 Arrhenurus sculptus Halbt. a, Dorsal view of male, b, Palp of male 



x 168. c, Ventral view of female. 



26 Arrhenurus Kanei Halbt. a, Dorsal view of male, b, armature of male. 



c, Palp of male x 224. d, Ventral view of female. 



27 Arrhenurus ornatus George. Dorsal view of male. 



28 Arrhenurus forpicatus Neuman, var. perforates George. Petiolus region 



x 115. 

 29. Arrhenurus forpicatus Neivman. Petiolus region x 115. 

 30 Feltria Routi Walter, a, Dorsal view of male, b, End segment of third 



leg x 386. 

 31. Lebertia finibriata Sig. Thor. Ventral view x 47. 



32 Unionicola rimdaris nov. sp. a, Palp of female x 224. b, Genital area of 



male, c, Central epimeral region 2 . 



33 Piona rotundoides (Sig. Thor.). a, Genital area of male, b, Genital area of 



female x 85. 

 33 Piona paucipora (Sig. Thor.). Genital area of female. 



