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Maia exterior maxillarum 
acie inermi p 1 e r i s q u e , 
inferiore pectinate spinosa Ateucho, Aphodio, Am- 
m o e c i o ; 
unco terminata bidente Geotrypæ, 
simplici reliquis . 
Maia interior maxillarum 
acie utraque spinis pectinate dispositis armata, 
pectine superiore rariore Ateucho, Ammoecio, Trogi, 
Sinodendro; 
unco terminali carens Parastasiæ, 
unco terminata simplici Osmodermati, Cetoniæ, Lu- 
cano, Dorco, Platycero, Si- 
nodendro, 
bifido Ateucho, Passalo, 
infra bispino Aphodio, Ammoecio, 
trifido Trogi, Geotrypæ; 
apice bidens Euchloræ, Phylloperthæ, 
tridens Xylotrypæ, Oryctæ, Melolonthæ, Rhizo- 
trogo, Sericæ. 
Stipites palpigeri maxillarum 
exserti, articulum proprium palporum simulantes plerisque, 
brevissimi, vix exserti Xylotrypæ, Parastasiæ, Osmo- 
dermati, Cetoniæ, Passalo. 
Palpi maxillares 
biarticulati Passalo, 
triarticulati reliquis; 
malam exteriorem 
non superantes Xylotrypæ, Parastasiæ, Osmoder- 
mati, Cetoniæ, 
perpaulum superantes Oryctæ, Lu c an o, Passalo, 
superantes articuli terminalis parte 
quarta Euchloræ, Geotrypæ, Sinodendro, 
tertia Melolonthæ, Trogi, Dorco, 
