182 Mr. H. W. Bates on Longieorn 



Heterachthcs nigrocinctvs,n. sp.— Linearis, subdepressus, 

 glaber, sparsissime setosus, castaneus, nitidus, antennis 

 (articulis 1-2 exceptis) pedibusque flavis, elytris macula 

 magna ante medium (suturam baud attingenti) et fascia 

 obliqua mox assequenti testaceo-albis, laete nigro-margi- 

 natis ; thorace angusto, cylindrico, Isevi, supra vix in- 

 tequali; elytris subglabris; femoribus modice clavatis, 

 apice breviter bidentatis. 



Long. 4 lin. (^ . 



One example. 



Ohrium albif as datum, n. sp. — Falvura, politum, capite 

 densissime rugoso-opaco, antennis 3-4 basi albo-testaceis ; 

 thorace antice abrupte etfortiter dilatato, postice gradatira 

 angustato, prope basin constricto, supra juxta dilatationera 

 impresso, disco Isevi convexo ; elytris punctis perpaucis 

 setiferis sparsis, pone medium maculis duabus transver- 

 sabbus, albiSj^ suturam baud attingentibus, prirao trian- 

 gulari. 



Long. 3 bn. 



One example. 



Section B. 

 Eyes finely facetted (Diurnal). 



Ophhtomis Beltii, n. sp. — ? Saturate flavus, aureo 

 breviter pubescens, antennis, femoribus posticis apice, 

 tibiis et tarsis, nigris ; capite et thorace nigro-bivittatis, 

 elytra sutura antica et utrinque maculis 4 nigris, prima 

 angusta, callo huraerali tegenti, 2nda paulo ante et 3ia 

 longe post medium, transversis, 4ta apicali ; capite antice 

 longissimo, vertice grosse, collo subtibter sparsim, punc- 

 tatis ; thorace et elytris nitidis, baud densissime punctatis ; 

 abdomine segmento ultimo nigro, infra simpliciter emar- 

 ginato; antennis longitudine corporis, apices versus 

 incrassatis. 



Long. 7 lin. 



In its slender shape, the single example of this fine 

 species resembles the males of this genus, and its very 

 long antennae add to the resemblance ; but the form of 

 the last ventral segment shows it to be a female. 



One example, in Mr. Belt's collection. 



OpMstomis picticornis, Bates, Trans. Ent. Soc. 1869, 

 p. 384. — Apparently not uncommon in Chontalea. 



