MILLIPEDS OP NORTH AMEEICA 151 



Julus milesi Wood 



Julus milesi Wood, 1864, Proc. Acad. Nat Sci. Philadelphia, p. 13. 

 Type: Present location unknown. 

 Type Locality: Michigan. 



A form not identifiable with certainty. It was probably based on im- 

 mature specimens. 



Order SPIROBOLIDA 



Spirobolinae Bolhnan, 1893, U. S. Nat. Mus. Bull. 46, p. 156. 

 Spirobolidae (in part) Verhoeff, 1893, Zool. Anz., vol. 16, p. 481. — 



Pocock, 1894, Chilopoda, Symphyla and Diplopoda . . . , in Weber, 



Zool. Erg, Reise Niederl. Ost-Ind., vol. 3, p. 388. 

 Anocheta Cook, 1895, Ann. New York Acad. Sci,, vol. 9, p. 7. 

 Spiroboloidea Attems, 1926, in Kiikenthal-Krurabach, Handbuch der 



Zoologie, vol. 4, p. 192. 



KEY TO THE NORTH AMERICAN FAMIUES OF SPIROBOUDA 



1. Prozonites of some of the segments usually with a pair of dorsal pits (scobinae) ; 



stemite of anterior gonopods produced distally; telopedite of posterior gonopods 

 distally biramous (tibiotarsus with a separate solenomerite) , usually very slender. 



Rhinocricidae (p. 151) 



Scobinae never present; sternite of anterior gonopods not conspicuously produced 



distad; telopodite of posterior gonopods not very slender and usually without a free 



and conspicuous solenomerite 2 



2. Second tergite extending well below level of the collum, latter with ends generally 



rounded; coxite and telopodite of posterior gonopods attached to each other in 



the same axis Spirobolidae (p. 159) 



Second tergite not extending below level of ends of collum, latter typically more 

 acute; posterior gonopods with coxite and telopodite attached to form a right 

 angle Atopetholidae (p. 152) 



Family RHINOCRICIDAE Brolemann 



Rhinocricidae Brolemann, 1914, Ann. Soc. Ent. France, vol. 83, p. 476. — 

 Schubart, 1951, Anais Acad. Brasileira Cienc, vol. 23, p. 221. 



Genus EURHINOCRICUS Brolemann 



Eurhinocricus Brolemann, 1903, Ann. Soc. Ent. France, vol. 72, p. 131. — 

 Pocock, 1907, Diplopoda, in, Biol. Centr.-Amer., pp. 68, 73. — Ho£E- 

 man, 1953, Proc. Biol. Soc. Washington, vol. 66, p. 179. 



Generotype: Eurhinocricus biolleyi Brolemann, by original designation. 



Range: Middle America, from southern California south to Panama; 

 Jamaica. 



Species : Twenty, of which one occurs, in our area. 



