296 Annals of the Carnegie Museum. 



gg. Vertex horizontal, forming a distinct angle with the front. 



Tegmina lanceolate Diplophyllus Saussure. 



//. Wings shorter, or but little longer, than the tegmina, the tri- 

 angular field of their apex prominent. Ovipositor consider- 

 ably longer than the pronotum. 

 g. Ovipositor almost twice as long as the pronotum, broadest 

 in the middle, its apex acuminate. . Annalomes Scudder. 

 gg. Ovipositor one-half longer than the pronotum, broadest 



beyond the middle Apocerycta Brunner. 



cc. Meso- and metasternal lobes both (except in the genus Ischira where 



they are rounded) triangularly produced. Ovipositor obtuse, crenu- 



late, or acuminate, and with the valves very smooth, separated. 



d. Ovipositor suddenly curved upwards at its base, the lower valve with 



its apex truncate and profoundly crenulate. (Fastigium of the 



vertex deflexed, equal in width to the first joint of the antennae, or 



wider, obtuse. Tegmina lanceolate or ovate, both forks of the 



radial branch passing out on the dorsal margin.) 



Orophus Saussure. 

 dd. Ovipositor either suddenly or only gradually curved, the margins 

 smooth, the lower valve acuminate at its apex, somewhat separated 

 from the upper valve. 

 e. Fastigium of the v-ertex strongly obtuse, four times wider than the 

 first antennal joint (in Ischyra Jlaviceps the fastigium is about 

 twice as wide as the first joint of the antennae). 

 /. Anterior tibiae with the foramina on both sides shell-like. 

 Posterior femora totally dentate below on the outer margin. 

 Metasternum provided with triangular lobes. 



Lohophyllus Saussure. 



ff. Anterior tibiae provided on both sides with wide-open foramina. 



Posterior femora spined below on the outer margin towards 



the apex. Metasternum provided with either triangular or 



rounded lobes Ischyra Brunner. 



ee. Fastigium of the vertex lengthily produced, or short, a little wider 

 than the first antennal joint, or acuminate. 

 /. Lateral lobes of the pronotum with their margins fringed with 

 hairs. Tegmina membranous or leathery. 



Synlechna Brunner. 



ff. Lateral lobes of the pronotum with their margins smooth. 



Tegmina corneous. 



g. Posterior margin of the elytra nearly straight. Both forks 



of the branch of the posterior radial vein running out on 



the posterior border of the elytra. Mesosternal lobes 



plain, extending over the coxae. 



/;. Fastigium of the vertex wider than the first joint of the 



antennae. Tegmina strongly narrowed back of the 



middle. Anterior tibiae provided with wide-open 



foramina on both sides Philophyllia Stal. 



