58 



REV. J. E. HULL ON 



SO isolated without very strong reasons. With 

 much more hesitation I also include Celaenopsis 

 here. 



53. Thinozo'con /iiichaeln, Halbert. 



A Zenonoid species living between tide-marks ; as 

 yet recorded from Ireland (east and west coasts) 

 only. 



CELAENOPSIS, Berlese, 1886. 



Type : cuspidata, Kramer. 



The most striking feature of this genus is the three 

 marginal scuta of the ventral surface. 



54. Celaenopsis cuspidata, Kramer. 66. 



Gibside (R. S. B.) 

 Ireland. 



ZERCON, Koch, 1842. 



Type : triangularis^ Koch. 



1. All the dorsal setse similar acute 

 Some of the setae thickened rodlike .. 



2. All the dorsal setse thick 

 Twelve plumose sette in the posterior half 



3. Posterior dorsal scutum regularly pitted 



,, ,, finely reticulate 



55. Zercon triangularis, K. 



General, and fairly frequent. 

 Cheshire, Ireland. 



56. Zercon caudatus, Berl. 



(?= pellatiis, Koch). 



Westmoreland (Varty-Smith). Lancashire. 



57. Zercon perforatulus, Berl. 67. 



Ninebanks ; particularly plentiful in nests and runs 

 of Sorex vulgaris. 



58. Zercon trigonus, Berl. 67. 



West Allendale ; few, mo.stly in sphagnum. 

 Westmoreland (Patterdale, R. S. B.) Ireland. 



3 

 2 



trigonus. 

 triangularis, 

 perforatulus. 

 caudatus. 



66, 67, 68. 



67. 



