2 The Crasjjedosomatidae of North America. 



Order Lophotricha. 

 Family Pal/EOCAMPID.E, — genus Palseocampa. 



Distribution: A fossil from the carboniferous Mazon Creek 

 beds, Illinois. 



Subclass CHILOGNATHA. 

 Order Oniscomorpha. 

 Suborder Glomeeoidea. 

 Family Glomerid^e, — genera, Glomeris, Latzelia (preoccupied by a fossil 

 chilopod. ) 



Distribution : Europe, Asia and North Africa. 

 Family GERVAisiiDiE, — genus Gervaisia. 

 Distribution: Europe. 



Suborder Zepheonioidea. 

 Family Zepheoniid^, — genera Zephronia, Sphseropoeus, Sphterotberium . 

 Distribution : South Africa and Southern Asia. 



Order Limacomorpha. 

 Suborder Glomeeidesmoidea. 

 Family Glomeeidesmid^, — ^genus Glomeridesmus. 

 Distribution : South America and the West Indies. 

 Family Zepheoniodesmid^e, — genus Zeplrroniodesmus. 

 Distribution : Sumatra. 



Order Colobognatha. 

 Suborder Polyzonoidea. 

 Family Polyzoniid^e, — genera Polyzonium, Platyzonium, type P. getsch- 

 inannii ( Cryptodesmus getschmannii Karseh.) 



Distribution : North temperate regions of both hemispheres. 



Family Siphonotid/E, — genera, Bdellotus, type B. formosus (Siphonotus 

 formosus, Pocock), Rhinotus, type 5. africanus ( Sipbonotus af ricanus, Cook), 

 Siphonotus. 



Distribution : Tropics of both hemispheres. 



This and the previous family may constitute a superfamily 



Pol37zonoidse, equivalent to the superfamilj^ Siphonophoroidje : 



Family Siphonophorid^e, — genera Bactrois, typei?. vittatus ( Sipbonophora 

 vittata, Pocock), Sipbonophora. 



Distribution: Tropics of both hemispheres. 



Family Siphonoehinid^, — genus Sipbonorhinus. 



Distribution: Tropics of both hemispheres. 



