TERRRS'JRIAT, ACARI OF THE 'lYNK PROVINCK 79 



OLOGAMASUS, Berl. 



Type : calcaratus^ Koch. 



1. Sternal shield divided by a transverse line ... ... inor7iatus. 



,, not so divided ... ... ... ... 2 



2. Fermur ii (^) with long acute spur ... ... ... poUicipatus. 



,, short obtuse spur ... ... ... calcaratus. 



144. Ologamasus calcaratus, K. 66, 67, 68. 



Red-brown. The female (of all three species) is 



similar to Ololaelaps, the male narrower. 

 Quite general, in moss. 



145. Ologamasus poUicipatus, Berl. 66, 67, 68. 



Yellow-brown. Apparently very variable, and Berlese 

 tabulates several varieties which at present I cannot 

 undertake to identify with any certainty. 



Abundant everywhere, in moss. 



146. Ologamasus inornatus, Berl. 67. 



Not difficult to separate from the preceding ; but 

 whether it is really specifically distinct, I do not 

 know. Like Berlese I have failed to turn up a 

 male. 



West Allendale, moss in woods, rare. 



Cumberland, Ireland. 



PERGAMASUS, Berl. 

 Type : cfassipes, L. 



A miscellaneous assortment, but only one sub-genus 

 {Af?iblygamasus, Berl — type: septentrionah's, Ond.) 

 has been put forward, while alpestris, hamatus, and 

 robustus are each typical of a group of at least 

 equal value. There should therefore be 4 sub- 

 genera — or none. 



§i. Amblygamasus, Berl. 



Body of both sexes piriform, rostrum very prominent, 

 cuticle polished and smooth. Femur ii of $ 

 crassate but spurless. Colour ruddy brown. 



The only British species is septentrionalis. 



