Bruner: Tropical American Tettigonoidea. 339 



«. Disc of the pronotum provided with acuminate 

 tubercles, which'are arranged in two longitudinal 



series Pr isles Redtenbacher. 



ee. Middle tibiae above unarmed or through variation one-spined (in 



some species of the genus Platyphyllum two-spined). Anterior 



femora somewhat compressed and a very little curved at their 



base. (Pronotum on the hind margin not. or but weakly, 



bordered. Some species provided with green tegmina). 



/. Pronotum closely granoso-rugulcse. very fiat, the transverse 



sulci inconspicuous, the defiexed Icbes low or narrow, the 



anterior angle obtuse, strongly rounded. Legs greatly 



depressed, long and densely pilose. Anterior femora curved 



at their base; above laminate. . . Slenoschema Redtenbacher. 



//. Pronotum smooth or obtusely granulose, the sulci distinct, the 



defiexed lobes with the anterior angle right, acute. Legs 



less compressed. Anterior femora compressed and gently 



curved, above acutely carinated or somewhat compressed, 



above rounded. 



g. Wings smoky or tessellate. Tegmina fuscous. 



Leurophyllum Kirby. 

 gg. Wings hyaline. Tegmina often bright green or ffavous. 

 h. Tegmina more than quadruple the length of the pro- 

 notum. Posterior tibiae above on both margins 



many-spined Platyphyllum Serville. 



hh. Tegmina not more than three times the length of the 

 pronotum. Posterior tibiae above on the outer 

 margin smooth or few-spined. Species confined to 



Jamaica Jamaicana Brunner. 



bb. Metasternum narrowed posteriorly, the foveola; between themselves less 



distant than from the lateral margin, joined together by an arcuate sulcus. 



Anterior femora frequently armed with small inwardly curved genicular 



spines, or with none. (Wings smoky, never with the transverse veins 



margined with paler color.) 



c. Genicular lobes of the hind femora armed on both sides with a spine, 



or at least the lobes triangulately produced. (In Brachyaiichenus 



alrosignatus the external lobe is rounded.) 



d. Pronotum smooth, or obtusely rugose, or granulose. Metasternal 



foveolae less remote one from the other than from the lateral 



margin. Metazona of the pronotum a little shorter than the pro- 



and mesozona united. 



e. Anterior femora below four-spined, the spines concolorous. 



(Antennae unicolored fuscous, or pale annulate. Genicular 



lobes, except the external one on the intermediate femora, 



armed with an incurved spine Meroncidius Serville. 



ee. Anterior femora below three-spined, all of the spines black. 

 (Genicular lobes of the anterior femora obtuse, sometimes the 

 inner lobes are provided with a very small spine). 



Tricenirus Brunner. 



