26 [13) Papilla present on fourth pair of legs; clava 



slightly constricted Orzeliscus belopus 



26 {13} Papilla absent on fourth pair of legs; clava 



uniform in width Orzeliscus septentrionalis 



27 (12) Middle two toes on each foot much longer than 



outer two toes Archechinvscus marci 



27 {12) Toes approximately equal in length 



28 



12 



