The Graspedosoviatidee of North America. 3 



Suborder Platydesjioidea. 

 Family Platydesmid^, — genera, Andrognatlius, Brachycybe, Dolistenus, 

 Platydesmus, Pseudodesmiis. 



Distrihution : North America, Europe and Asia. 



Snborder Siphonockyptoidea. 

 Family Siphonocry^ptid.t;, — genus Sipbonocryptus. 

 Distrihution: Sumatra. 



Order Monocheta. 

 Suborder Stemmatoiuloidea. 

 Family Stemmatoiulidje, — genus Stemmatoiulus. 

 Distribution : Tropics of botti hemispheres. 



Suborder Xyloiuloidea. 

 Family Xy'loiulid^e, — genus Xyloiulus {Xylohius Dawson). 

 Distrihution: A fossil from the Sigillarian stumps of the 

 carboniferous beds of Nova Scotia. 



Order Merocheta. 

 Suborder Ly'SIOPETALOIDEA. 

 Family Ly'STOPETALID^, — genera, Callipus, Megastrej)bon, Eurygyrus, 

 Lysiopetalum, Spirostrephon. 



Distrihution: North Temperate Zone. 



Suborder Craspedosomatoidea. 

 Family Craspedosomatid.e, — genera, Aporogona, type A. crenulata 

 (Craspedosoma crenulatum, Latzel), Atractosoma, Attemsia, type A. siygia 

 (Latzel), Aulacosoma, Bactropus, Basigona, type B. athesina (Fedrizzi), Bom- 

 ogona, type B. lomhardica (Brolemann), Branneria, Cbelogona, type C. car- 

 pathica (Latzel), Caseya, Chordeuma, Cleidogona,* Conotyla, Craspedosoma, 

 Gryj)Ogona, type G. latzeli ( Atractosoma latzeli, Verboeii), Haasia, Haplogona,t 

 type S. oculodistincta (Verhceff), Mastigona,t type 3f. mutabilis (Latzel), 

 Melogona, type 31. rhenana (Chordeuma gallicum var. rbeuanum, VerlioefE), 

 Mycogona, type 3T. germanica (Cbordeuma germanicum, Verboeff), Nanogona, 

 type iV. polydesmoides (Leach), Ocbogona, type 0. pusilla (Atractosoma pusil- 

 lum, Verbcei5), Phanogona, type Ph. bohemica (Eosicky), Pseudotremia, Rbis- 

 cosoma, Scoterpes, Tracbygona,j Trichopetalum, Underwoodia, Xipbogona,t 

 type X. flavesceus ( Latzel ) , Zygonopus. 



Distribution: North Temperate regions and New Zealand. 



*Cleidogona is proposed for Cryptotricbus Packard, preoccupied in Co- 

 leoptera. 



t These three names take the places respectively of Latzelia, Poratia and 

 Haasea, proiDOsed by VerbceflE in recent numbers of the Zoologiscber Auzeiger, 

 but all preoccupied in Diplopoda, — Latzelia twice. 



I For Tracbysoma, recently j)roposed by Attems but preoccupied in Crustacea. 



