240 OETHOPTERA. 



2. Thamnoscirtus montanus, sp. n. (Tab. XIII. fig. 36.) 



c?. Flavo-testaceus, cicindeliformis. Antennae parte basali plumosae, nigrae, articulis l°-2° fulvis, dehinc 

 longiuscule albae, dehinc fuscae. Palpi labiales ac palporum maxillarium articuli 2 ultimi nigri ; primo et 

 secundo articulo supra nigro-marginatis ; ultimo articulo palporum maxillarium ovato-foliaceo, truncate 

 Caput immaculatum. Pronotum margine postico medio nigro, vel nigro-bimaculato. Elytra basi et 

 parte costali irregulariter fulvo-ochracea, de reliquo luteo-fulva, vittis nigris irregularibus transversis 2, 

 cum vitta obliqua conjunctis ; macula transversa flavida margineque apicali anguste luteo ; campo laterali 

 luteo, macula apicali nigra 1 vel 2, ac frequenter in area supera vitta longitudinali fuscescente. Alae 

 elytrorum longitudine, fuscescentes. Pedes fulvo-testacei. Tibiae intermediae utrinque fusco-lineatae ; 

 femora 1-2 apice linea brevi nigra. Genua postica apice fusco-rufa. Tibiae posticae supra linea fusca. 

 Tarsi postici articulis 2 sequentibus aequilongis. 



c? . Long. corp. 5*5, cum elytr. 7 ; elytr. 5 ; femor. post. 4-8 ; latit. elytr. in dorso 2'8 millim. 



Hab. Panama, Bugaba {Champion). 



Resembles T. cicindeloides, Gerst, but this latter species is of larger size, has no 

 wings, and its antennae are not plumose at the base. 



[3. Thamnoscirtus viridicatus, sp. n. 



Niger, T. cicindeloida formis simillimus. Antennae basi pilosaa, nigrae, turn albidae, dein piceae. Caput fulvum, 



postice nigrum ; fronte, vertice oceipiteque nigris ; fascia angusta interoculari fulva ; palpis nigris. 



Pronotum margine antico margineque loborum lateralium toto, necnon superne fasciis 3 longitudinalibus 



incompletis flavidis. Elytra abdominis longitudine ; alae abortivae. Sternum pedesque 1 US -2 US rufa ; 



femoribus basi fuscis ; tibiis superne nigris ; anticis utrinque foramine elliptico pellucido instructis. 



Pedes postici rufo-brunnei ; femoribus basi decoloribus (viridibus ?). Abdomen nigrum ; cercis testaceis. 

 2 . Elytra virescentia, superne nigra, maculis consuetis (basi 2, in medio utrinque 1, fasciaque transversa in 



speculo) viridibus, margine apicali et cantbis viridibus ; campo laterali viridi, macula ultra medium 



punctoque apicali fuscis. 

 Variat. Coloribus maculisque plus minus extensis ; in desiccatis colore viridi evanescente. 

 cS . Long. corp. 8 ; elytr. 5*4 millim. 



Hab. Guiana (coll. Brunner v. Wattenwyl: no. 12,430). — [From my manuscript 

 notes.] 



The forehead is adorned with a large black band, separated from the vertex by a 

 yellow line joining the eyes. The pronotum bears a yellowish line, shortened on both 

 sides, and other nearly lateral lines, which become fused with the yellowish margins of 

 the lateral lobes and with the yellowish band of the anterior margin. The colour of 

 the feet is very variable, passing from black to rufous. The posterior femora are at 

 the base pale or greenish-brown, this colour terminating in bands, the tip being rufous. 

 The lateral maculae of the elytra are variable.] 



Tribus (ECANTHIN.E. 



(Ecanthites, Saussure, Miss. Scient. Mex., Orthopt. p. 428. 

 (Ecanthiens, Saussure, Mel. Orthopt. 6 e fasc. p. 534. 



A very musical group, characterized as follows: — The elytra of the males always 

 entirely occupied by the tambourine, even in the species with apterous females, in 

 which case they are widely rounded at the tip (Tab. XII. fig. 15). The mediastinal 



