Checklist of the Millipeds of North America 



Class DIPLOPODA 



Diplopoda Gervais, 1844, Ann. Sci. Nat., ser. 3, vol. 2, p. 51. — Latzel, 

 1884, Myr. Ost.-Ung. Monarch., vol. 2, p. 40.— Verhoeff, 1926, in 

 Bronn, Klass. und Ordn. des Tier-Reichs, Band 5, Abt. 2, Lief. 1, p. 4. 



KEY TO THE SUBCLASSES OF DIPLOPODA 



1. Body soft, the exoskeleton not calcified, bearing clusters of peculiar setae, some of 

 which are branched or laterally armed; head with trichobothria ; males without 



gonopods PSELAPHOGNATHA (p. 9) 



Body hard, the exoskeleton more or less calcified, setae, when present, simple and not 

 clustered; head without trichobothria; males with characteristic gonopods. 



Chilognatha (p. 11) 



Subclass PSELAPHOGNATHA 



Pselaphognatha Latzel, 1884, Myr. Ost.-Ung. Monarch., vol. 2, p. 64. 

 Podochila Bollman, 1893, U. S. Nat. Mus. Bull. 46, p. 153. 



Order POLYXENIDA 



Penicillata Latreille, 1829, in Cuvier, Le regne animal, vol. 4, p. 326. 

 Polyxenidae Gray, 1842, in Todd, Cyclop. Anat. and Physiol., vol. 3, p. 546. 

 Ancyrotricha Cook, 1895, Ann. New York Acad. Sci., vol. 9, p. 1. 

 Schizocephala Verhoeff", 1926, in Bronn, Klass. und Ordn. des Tier-Reichs, 

 Band 5, Abt. 2, Lief. 1, p. 26. 



Family POLYXENIDAE Gray 



Polyxenidae Gray, 1842, in Todd, Cyclop. Anat. and Physiol., vol. 3, 

 p. 546. 



Genus POLYXENUS Latreille 



Pollyxenus Latreille, 1802, Histoire naturelle . . . des crustaces et des 



insectes, vol. 3, p. 45. 

 Polyxenus Goldfuss, 1820, Handbuch der Zoologie, vol. 1, p. 199. — ^Latzel, 



1884, Myr. Ost.-Ung. Monarch., vol. 2, p. 71. 

 Generotype : Scolopendra lagura Linnaeus, by monotypy. 

 Range: Nearly cosmopolitan. 

 Species: About a dozen; seven occur in our area. 



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