67 



^Edceagus surmounted by two, sometimes three strong 

 thorns and some smaller ones. Anellua lobes spined. 

 Saccus pointed. 



Ostium with circular plate. Bursa small. 



Cognata, Thnb. Simulata, Hb- 64 



Valva rounded; costa thickened, gibbose at apex; sacculus 

 extended, strong. Uncus slender, without pads. ^Edoeagus 

 encircled by many slender, strong, thorns. Anellus lobes 

 set with spatulate hairs, tips hamulate. Saccus pointed. 

 Ostium strong with bilobed, squamous plate. Bursa 

 small. 



Obeliscata. 234 



Valva rounded; costa thickened, tip slightly produced, 

 geniculate centrally; sacculus extended, spatulate, edge 

 sometimes serrate, sometimes spined. Uncus slender, 

 without pads. .ZEdoeagus narrow, surmounted by ten to 

 twelve strong thorns. Anellus lobes set with broad, curved, 

 spatulate, hairs. Saccus pointed. 



Ostium with bilobed plate. Bursa small. 



Variata, Schiff. 103 



Valva rounded; costa thickened, tip slightly produced, 

 geniculate centrally; sacculus extended, edge jagged, point 

 sharp, curved. Uncus slender. JMceagus narrow, sur- 

 mounted by a double row of many strong thorns. Anellus 

 lobes set with curved, sharp, spatulate hairs. Saccus 

 pointed. 



Ostium with bilobed plate. Bursa small. 



Firmata, Hb. 53 



Although closely allied to four preceding species, firmata 

 seems to form a separate genus. 



Valva rounded; costa thickened, acutely pointed at 

 apex; sacculus extended, strong, pointed. ZEdoeagus plain. 

 Cornuti several strong thorns. Juxta squared. Cristse a 



E 2 



