20 The Graspedosomatidae of North America. 



2. Second legs strongly crassate, a character appearing only in 

 Underwoodia. 



3. Second legs abnormall}^ slender : Case3^a. 



4. Coxae of second legs with a conic process : Z3-gonopus, or 

 with a long curved or hamate process : Caseya, Underwoodia. 



5. Third joint of second legs with a cushion-like bunch covered 

 with conic processes : Conotyla. 



6. Third joint of second legs tuberculate on ventral face: Caseya. 



I. Last joint of second legs with a pectinate row of stout hairs 

 on the inner edge : Conot3da, Cleidogona, and probably the other 

 related genera. 



8. Claw of second legs ver}-- small, much exceeded by a tuft of 

 long flexuous hairs : Underwoodia. 



9. Legs 3-T strongly crassate : Trichopetalum, less so in most 

 of the other genera. 



10. Coxse of third legs produced into a rounded prominence 

 with a tuft of hairs at apex : Caseya, Underwoodia. 



II. Third joint of third legs much crassate : Underwoodia. 



12. Last joint of third and many succeeding legs with the ven- 

 tral face hispid with fine bayonet-like spines : Conotyla, Clei- 

 dogona, Pseudotremia. 



13. Fourth joint of fourth and fifth legs with a cushion-like 

 bunch covered with conic tubercles : Conotyla. 



14. Sixth legs with coxa somewhat enlarged, and with a tuft of 

 long hairs : Caseya. 



15. Sixth legs stronglj^ crassate: Zygonopus. 



16. Seventh legs with coxa greatly enlarged, bearing a conic 

 process and tufts of hairs : Casej^a. 



17. Coxffi of seventh legs with a large tuberculate bunch on the 

 posterior side: Conotjda (figs. 70 and 73). 



18. Fourth joint of seventh leg with a proximally directed, 

 apicall}!- quadridentate process : Conotyla fischeri (figs. 70 and 

 71). ^ ■ 



19. Tentli and eleventh legs with the coxae perforate: Cleido- 

 gona, Pseudotremia, Conotyla. Sometimes a shapeless mass of 

 membrane or hai'dened secretion projects from the aperture ; 

 perhaps this is what is described by Latzel as a wart-like process 

 in European Chordeumidse. 



20. Coxae of tenth male leg greatly enlarged and with a distal 

 aperture: Casej'^a, Underwoodia (figs. 185, 210, 211). In Ca- 



