MILLIPEDS — KEETON 9 



6. A large, rather thin terminal plate on distal end of telopodite 7 



No such thin terminal plate present 8 



7. Terminal plate longer than broad, its distal portion strongly curved (fig. 



bd-f) hofftnani, new species (p. 31) 



Terminal plate about as broad as long, its distal portion not curved (fig. 7a). 



lamina ta, new species (p. 39) 



8. Telopodite very simple and slender, forming a large, continuous arc with no 



abrupt bends,|the distal end acuminate (fig. 5a) . hansonia Causey (p. 31) 

 Telopodite of gonopod not as described 9 



9. Telopodite noticeably swollen just beyond the cingulum, abruptly narrowing 



again more distally 10 



Telopodite not noticeably swollen just beyond the cingulum, or if so, not 

 becoming abruptly slender more distally 11 



10. Distal portion of telopodite twisted (fig. 86) . . plecta, new species (p. 43) 

 Distal portion of telopodite not twisted, simple, the end acuminate (fig. 8/i). 



separanda Chamberlin (p. 44) 



11. Pronounced ridges present along cephalic margins of paranota of coUum . 12 

 Ridges absent or very weak 23 



12. Postcingular portion of telopodite of gonopod bent cephalically at a right 



angle when viewed mesially (fig. li) calceata (Causey) (p. 16) 



Postcingular portion of telopodite not so shaped 13 



13. Telopodite small, slender, forming a simple arc, but with a sharp bend in the 



postcingular portion; the distal portion not curving back close to the 



precingular shaft 14 



Gonopod not as described 16 



14. The bend not extremely sharp, the telopodite narrowing very abruptly 



beyond the bend thereby forming a pronounced shoulder at the bend; the 

 distal portion of the telopodite dagger-like with a very acute point (fig. 



2a-c) ccdra, new species (p. 17) 



The bend very sharp; the telopodite not narrowing so abruptly nor forming 

 such a noticeable shoulder, the distal portion not dagger-like (fig. la- 

 c) 15 



15. Distalendof telopodite acuminate (fig. la) . ochra initialis Chamberlin (p. 11) 

 Distal end of telopodite more blunt . . ochra ochra (Chamberlin) (p. 10) 



16. Postcingular portion of telopodite with a very pronounced caudally directed 



twist about midwaj^ of its length (fig. 2g,h) . . . electa Causey (p. 20) 

 Telopodite with no such twist 17 



17. Entire telepodite arc completed quite distant from telopodite base; post- 



cingular portion of telopodite relatively broad, thin, and flat, with no 

 hook in the distal portion and no distinct solenomerite (fig. 4d-/). 



glendalea (Chamberlin) (p. 28) 

 Gonopod not as described 18 



18. Distal end of telopodite with a distinct solenomerite set off from main por- 



tion of telopodite 19 



No distinct solenomerite 20 



19. Telopodite rather flat and moderately broad, forming a continuous arc, the 



solenomerite tongue-like in shape (fig. 7d) . . ligula, new species (p. 40) 



Telopodite very bulky, with a strong ridge along cephalic side of distal half 



of postcingular portion (fig. 8d) splendida (Causey) (p. 47) 



20. Gonopod small, less than 1.7 mm. in telopodite arc length and 1.2 mm. in 



telopodite arc width; the arc rather slender and simple with no hook in 



the distal portion (fig. 6a-c) indianae (Bollman) (p. 34) 



Gonopod larger, more than 1.8 mm. in telopodite arc length and 1.3 mm. in 

 telopodite arc width; the arc either not so slender or with a hook in the 

 distal portion 21 



