CXI INTRODUCTION. 



Family II. Arachnidiidae. 

 ARACHNIDIUM, Hincks. 



Family III. Flustrellidse. 

 FLUSTRELLA, Gray. 



Group ii. STOLONIFEEA, Ehlers. 

 a. ORTHONEMIDA, Hincks. 

 Family IV. Vesiculariidae. 



VESICULARIA, J. V. 



Thompson. 

 AMATHIA, Laraouroux. 



BOWERBANKIA, Farre. 

 AVENELLA, Dalyell. 

 FARRELLA, Ehrenberg. 



Family V. Buskiidse. 

 BUSKIA, Alder. 



Family VI. CylindroeciidaB. 



CYLINDR<ECIUM, Hincks. 



ANGUINELLA, Van Bene- 

 den. 



Family VII. Triticellidae. 

 TRITICELLA, Dalyell. | HIPPURARIA, Busk. 



b. CAMPYLONEMIDA, Hincks. 



Family VIII. Valkeriidae. 

 VALKERIA, Fleming (part). 



Family IX. Mimosellid. 

 MIMOSELLA, Hincks. 



Family X. Victor ellidae. 

 VICTORELLA, W. Savillc Kent. 



