Togata, Hb. 44 



Valva long, narrow. Labides are slightly differently 

 mounted on their footstalks. The papillae are appressed, 

 very broad and are not extended as in other species. 

 Uncus tapered to a single sharp point. Cornutus large, 

 bulbed. Coremata sessile, hairs long. 



Ostium fairly distinctly formed. Ductus bursae strong. 

 Bursa large, pannicular, spines strong. 



Venosata, Fb. 84 



Valva rounded. .Edoeagus short. Cornutus a single 

 flattened spine. Coremata large, hairs long, clavate. 

 Saccus deep, bluntly pointed. 



Ostium weak. Ductus bursae short. Bursa pannicular. 



Haworthiata, Dbd. 



Isogrammaria, H.-S. 84 



Yalva rounded. Uncus very weak, bifurcate. Cornutus 

 indefinite. Coremata rounded, hairs long, clavate. Saccus 

 deep, centre indent. 



Ostium weak. Ductus bursae short. Bursa elongate, 

 with a broad longitudinal band of spines. 



The uncus is unique as far as British species go. 



Calliclystis rectaivgulata, L. 145 



Valva rounded. Labides modified, their junction with the 

 valva terminating in a free curved spine; papilla at base 

 appressed. Uncus not produced. JEdceagus short. Cornuti 

 many in band. Manica spined in comparatively large and 

 few spines, two large curved spines being conspicuous. 

 Anellus attached to the manica by a patch of strong spines. 

 Ostium weak, small. Ductus bursae long. Ductus 

 seminalis strong. Bursa subglobular. Signa two lunate, 

 scobinate bands of spines, one larger than the other. 



Dcbiliata, Hb. 85 



Valva rounded. Labides modified. Papilla at base not 

 appressed. Uncus not produced. ^Edoeagus short. Cornuti 



