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ACROGENIUS (gen. nov. Cerambycidarwm ). 
Caput antice productum ; oculi emarginati, vix subtiliter granu- 
lati; antenne (femine?) quam corpus sat breviores 
(articulis haud spinosis, 1° modico, 2° brevi, 3° quam 1“ et 
quam 4°* duplo longiori, 5° quam 4** vix breviori); pro- 
thorax subcylindricus inermis; elytra ad apicem truncata 
haud spinosa; cox intermediw extus clause; femora 
petiolata, elongata, ad apicem subito valde clavata (posticis 
elytra paullo superantibus) ; tarsorum posticorum articulus 
1° quam 2"° 3"° que conjuncti vix longior. 
Its finely granulate eyes (about as finely as in Hetosticta, in 
which however the granulation is less fine than in many genera 
of the section) refer this genus to the second of M. Lacordaire’s 
sections of the Cerambycides. In that section the combination of 
“intermediate cox closed externally,” ‘front cox rather widely 
separated from each other,” ‘head not narrowed behind,” 
“elytra punctulate,” ‘“elytral epipleurz obsolete,” “eyes rather 
distant from each other” places this genus among six “ groupes” 
which M. Lacordaire says cannot be distinguished inter se by any 
sharply defined character. Of these groups it appears to me that 
the Tillomorphides is the one in which the present genus is most 
at home. Its antenne are not long enough for the Rhopalophorides, 
and other objections occur in respect of the remaining four. The 
most striking character seems to lie in its femora, all of which 
are petiolate and clavate in the most exaggerated degree, the 
petiole of the front femora being a little longer than (of the inter- 
mediate nearly twice as long as, and of the hind more than twice 
as long as) the clavate black apex. Thus the femora are not 
unlike those of ctosticta except in being (especially the hind 
pair which are half again as long as the intermediate) much 
longer. The head, prothorax and antenne are very much like 
those of Acrocyrta chrysoderes, Pasc., except in the yellow of the 
prothorax being of the derm (not caused by pubescence) and in 
the antennz not being spinose. 
A. tinctus, sp. nov. Sat elongatus ; setis subtilibus erectis sat 
sparsim vestitus; capite meso- et meta- sternis pedibus 
(femorum petiolo excepto) prothoracis macula parva et 
elytris (notulis nonnullis exceptis) nigris, partibus ceteris 
rufo-testaceis, elytrorum notulis flavis exceptis [sc. in 
utroque elytro sutura et margine laterali usque ultra 
medium, plaga subscutellari elevata eburnea, notula lineari 
discoidali eburnea litteram 4 (sursum deorsum versatam) 
simulanti, inter hanc et marginem lateralem linea eburnea 
oblique posita, et fascia eburnea paullo ante apicem posita|, 
antennis ad basin fere nigris ultra medium fuscescentibus ; 
