U. S. NATIONAL MUSEUM 



BULLETIN 158 PLATE 2 



Arenosetella. New Genus 



Arenosetella spinkauda, new species; a. Female, d( rsal: 6, male, dorsal; c. female, first antenna; d. male, 

 first antenna: e, female, second antenna;/, mandible and palp; g, second maxilla; h. first leg; (, fourtn 

 leg- j female, fifth leg; k, male, fifth leg; /, dorsal surface of anal segment of abdomen, showmg claws 



Arenosetella fissilis. new species: m. Female, dorsal; n, second antenna; o, first leg: p. dorsal surface of 

 anal segment of abdomen, showing claws. 



