So REV. J. E. HULL ON 



§ii. Pergamasus, proper. 



Body of both sexes piriform, cuticle conspicuously 

 reticulate and rather rough. Femur ii crassate 

 with a strong falcate spur : patella ii with a 

 prominent apical spur or branch projecting inwards 

 and forwards. Colour ruddy brown, rather dull. 



1. Epistome 5-dentate crassipes. 



,, 3-dentate ... ... ... ... ... 2 



2. Patella ii (^) with thick L-shaped process below... alpestris. 



,, without this process ... ... ... coniger. 



Also, probably, processiferiis, diversus, lapponicus. 



§iii. Paragamasus. 



Body oblong, more or less parallel-sided in both 

 sexes. Pad. ii as in section ii, but without the 

 patellar spur. Colour pale yellowish brown. 



I. Main spur of femur ii (^$) very large truncate ... rohiistns. 

 ,, ,, not truncate ... ... 2 



?^ Accessory spur of femur ii ($) as long as the main 



spur ... ... 7)iinor. 



,, ,, shorter , . ... 5 



3. Accessory spur of femur ii ($) truncate ... ... rimciger, 



,, ,, acute slender ... rinicafelhis. 



§iv. Plesiogamasus — type : hamafus. 



Body of male narrow oblong, of female rather 

 piriform. Fed. ii of male only slightly crassate, 

 all the spurs more or less cylindrical. Colour very 

 pale. 



I. Body of male constricted in the middle ... ... parvidus. 



,, without constriction ... ... ... hamatus. 



147. Pergamasus crassipes, L. 66, 67, 68. 



Ubiquitous; oi Ganiasids iowwA. at large, by far the 

 most frequent. 



Va7-. longicof'/iis, Berl., with elongate patellar spur is 

 very common in the north of England. Also two 

 or three other forms with variations of the patellar 



