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Maia iiiterior maxillarum tridens. 
Dentes stricinlatnrii maxillarum viceni, suln'ecti, acuti. 
Ungulæ graciles, subnlatæ. 
Valvulæ anales acute expressæ, ovatæ. 
Orificia respiratoria majusciila, ovalia, in series transversas 
subdigesta. 
B. 
( A t e u c li ns, A p li o d i n s , A m m o e c i ii s ) 
Aren respiratoria apiracidormn extrn hvil am sifa. 
Pedes spimdix sparsi. 
Make maxiUarnm tolæ discretæ. 
Aperiura analis Iransversa, sviMrior. 
Area siridv/aforia ma^ulUndarvm inler condylvm arliwlarivm 
inferiorem et condytmn hypopharijngenm sila, trnnsrcrsa, rninnie 
granulosa. 
Labrum. margine priore hreviter trilobo. 
Pars scissoria mandihula> dextræ bidens, sinistro' tridens. 
Maia exterior maxillarum. aeie inferiore pectinate spinosa. 
Lingua paraglossis inslructa fixis, ma.rginalibus, pectinatis, 
hast harha.ti'i. 
Anmdus analis acute expressus. 
Orificia respiratoria in series transversas subdigesta. 
1. 
( A t e 11 c li u s ) 
Maia interior maxillarum unco bifido terminata. 
Ungulæ rect.a% robusta\ 
Segmenta dorsalia abdomini.s inermia. 
Valvula analis inferior biloba. 
Ateuchus 
Antenna^ capite duplo broviores ; articulus primus duplo 
longior quam crassior. 
