MILLIPEDS OF XORTH AMERICA 169 



Spirostreptidae Pocock, 1894, Chilopoda, Symphyla and Diplopoda . . . , 

 in Weber, Zool. Erg. Reise Niederl. Ost-Ind., vol. 3, p. 378. 



Spirostreptoidea Cook, 1895, Ann. New York Acad. Sci., vol. 9, p. 5. — 

 Attems, 1914, Zoologica, vol. 25, Heft 65-66, p. 52.— Verhoeff, 1931, 

 in Bronn, Klass. und Ordn. des Tier-Reichs, Band, 5, Abt. 2, Lief. 11, 

 pp. 1675, 1704. 



Spirostreptomorpha Attems, 1926, in Kiikenthal-Krumbach, Handbuch der 

 Zoologie, vol. 4, p. 197. 



KEY TO NORTH AMERICAN FAMILIES OF SPIROSTREPTIDA 



1. Lingual laminae of gnathochilarium separated by the mentum; telopodite of anterior 

 gonopod fused with the basiopodite, without apparent seminal groove. 



Choctellidae (p. 169) 



Linguid laminae of gnathochilarium not separated by the mentum; telopodite of 



anterior gonopod long, slender, partly embraced by the folded coxite but always 



freely moveable and with a distinct seminal groove . . . Spirostreptidae (p. 169) 



Family CHOCTELLIDAE Chamberlin and Hoffman 



Choctellidae Chamberlin and HoflFman, 1950, Chicago Acad. Sci., Nat. 

 Hist. Misc. No. 71, p. 7. 



Genus CHOCTELLA Chamberlin 



Choctella Chamberlin, 1918, Psyche, vol. 25, p. 25. 



Generotype: Choctella cumminsi Chamberlin, by original designation. 



Range: Alabama and Tennessee. 



Species: One. 



Choctella cumminsi Chamberlin 



Choctella cumminsi Chamberlin, 1918, Psyche, vol. 25, p. 25. — Loomis, 



1943, BuU. Mus. Comp. Zool., vol. 92, No. 7, p. 391, fig. 9. 

 Type: Mus. Comp. Zool. 



Type Locality: Glendale Hills, Davidson County, Tennessee. 

 Range: Cumberland Plateau and adjacent region, from the vicinity of 

 Nashville, Tennessee, south to the vicinity of Guntersville, Marshall County, 

 Alabama. 



Family SPIROSTREPTIDAE Attems 



Spirostreptidae Attems, 1914, Zoologica, Vol. 25, Heft. 65-66, p. 52 (The 

 first usage of the name Spirostreptidae in its current restricted sense, 

 i. e., exclusive of the Harpagophoridae and Odontopygidae) . 



Genus ORTHOPORUS Silvestri 



Orthoporus Silvestri, 1897, Boll. Mus. Zool. Anat. Comp. Univ. Torino, vol. 



12, No. 283, p. 7. 

 Generotype: Orthoporus diaporoides Silvestri, by monotypy. 



