MILLIPEDS — HOFFMAN 



193 



Gonopods in situ directed cephalomesiad, their apices in contact 

 and overlapping, extending forward between the legs of the 6th seg- 

 ment. Coxae rather small and subcylindrical, slightly shorter than 

 telopodite, with small coxal apodemes and weakly developed coxal 

 apophyses just above the origin of the solenite. Telopodite elongate 

 and slender, of the form typical of the genus but with a rather small 

 and slender secondarj?^ tibiotarsus which is only a little larger than the 

 prefemoral process. Primary tibiotarsus short, only 58 percent of the 



RETRORSUS 



HUBRICHTI 



ADSINICOLUS 



LATICOLLIS 



DUPLEX 



INeURSUS 



DENTICULATUS 



CRASSICUTIS 



CLARUS 



80 



ko hS SO 55 60 65 70 75 



Figure 2. — Graphic representation of variation in total length of the recognized forms 

 of Pachydesmus, the horizontal scale divided into units of 5 mm. 



total length of the telopodite. Distal end of primary tibiotarsus 

 slightly curved proximad of the terminal subdeltoid region (fig. 6). 



Female: Similar in all external details of sculpture to the male, 

 except for the more vaulted bodyform and slightly wider sternites. 

 Cephaloventral edge of the 3d segment on each side produced into a 

 distinct rounded lobe. Cyphopods similar to those of the Pachydesmus 

 crassicutis forms, the valves about equal in length to the receptacle. 



Color: I have seen no living specimens of this species. According 

 to the original description, "When in full color the dorsum is very 

 dark, black or nearly so, with the carinae sharply contrasting by their 

 lighter, in preserved specimens yellowish color . . . Under surface 

 and legs yellowish." Causey (op. cit.) notes that the color ". . . is 



