130 LONGICORNIA. 
of antennal scape as the type species, viz. suddenly dilated at the base and forming there 
an angle, whence it is cylindrical to the apex. These species only differ from D. orya — 
in their somewhat less retracted forehead. 
1. Dorcasta oryx. 
Dorcasta oryx, Pascoe, Trans. Ent. Soe. ser. 2, iv. p. 264’. 
Hab. Guatemaa, Zapote, San Gerénimo (Champion).—Sovutn America, Amazons !. 
Guatemalan specimens have the dark lines deeper in colour and generally more clearly 
defined than those from the Amazons, the sutural lines especially forming a well-marked 
blackish vitta. 
2. Dorcasta furcula. 
D. lignee (Bates) affinis, at minor posticeque magis attenuata. Linearis, thorace convexo elytrisque apice 
depressis furciformiter prolongatis ; pallide fusca (haud setosa), lineis occipitis et thoracis rectis dorsalibus 
duabus nigris (hoc lateribus cinereo lineatis) ; elytris macula scutellari (cinereo marginata), alteris oblongis 
indistinctis lateralibus (lineolis cinereis interjectis) atro-fuscis ; capite infra valde retracto, vertice profunde 
(inter tubera antennifera) sulcato, occipite elongato, recto ; thorace cylindrico, ante medium paullulum dila- 
tato ; elytris fortiter lineatim punctatis; antennis robustis, dense pubescentibus, infra ciliatis. 
Long. 3-34 lin. 
Hab. GUATEMALA, Duefias, Capetillo (Champion). 
3. Dorcasta geometrica. 
Robustior, convexior, subcylindrica, tomento levi ochraceo-fusco vestita, maculis lineisque atro-fuscis et cinereis 
eleganter variegata ; capite antice angustato, vertice sulcato, tuberibus antenniferis obtusis, fronte valde re- 
tracta ochracea, genis utrinque fusco trifasciatis; thorace minus cylindrico, prope apicem angustato, juxta 
basin dilatato angulisque posticis acutis, dorso valde convexo, supra lineis atrofuscis et cinereis curvatis antice 
subconvergentibus ; elytris basi depressis, postice convexis, prope apicem declivibus, apice suboblique trun- 
catis angulo exteriore longe producto, supra lineatim punctulatis, macula semicirculari scutellari (nigro 
et cinereo anguste bimarginata), altera magna mediana suturali, ramos versus humeros et postice versus 
marginem emittente (cinereo margirata) alteraque ante apicem, atro-fuscis ; antennis robustis, infra ciliatis. 
Long. 33-4 lin. 
Hab. Guatemaa, Zapote (Champion) ; Costa Rica (Van Patten). 
An undescribed species, closely allied to this, is found in South Brazil. 
Group ACANTHODERINI. 
This group is equivalent to the subtribe Acanthoderite, formerly proposed by me to 
include a host of genera, chiefly Tropical-American, which have a smooth pyriform 
antennal scape, and distinct tubercle and groove on the outer side of the middle tibie. 
All have completely divergent tarsal claws; but the intermediate cotyloid cavities are 
not constant in the extent to which they are opened externally. I do not, however, 
find them quite closed in Acanthoderes and the allied genera, as Lacordaire states to be 
the case. , 
