EEIOLUS.— BASILETTS. 385 



laevigatum, postice punctatum, arcuato-truncatum ; lobis lateralibus leviter rugulosis, margine infero 

 sinuato, angulo postico fere rectangulo, hebetato, haud producto. Elytra angustissima, a basi ad apieem 

 attenuata, apice hebetato-acuminata (dense reticulata), campo marginali venis costalibus 6 : 7. Pedes 

 graciles. Femora anteriora subtus inermia, lobo geniculari externo subacuto; intermedia in margine 

 antico spinis 3, lobis genicularibus acutis. Femora postica extus spinulosa, intus spinulis 3-4, lobis 

 genicularibus graciliter spinosis. Segmentum anale incisum, trigonali-bilobatum. Ovipositor brevis, 

 subarcuatus, nee dilatatus nee basi sinuatus, gradatim attenuatus, acutus, laevigatus, margine infero toto 

 arcuato, supero parum arcuato, dimidia parte apicali recta. Lamina infra-genitalis truncata. 

 $ . Long. 18 ; pronot. 5 ; elytr. 27, lat. 4*5 ; femor. post. 13*5 ; ovipos. 5-5 millim. 



Fi&ukes : — Fig. 9, the end of the female abdomen, with the ovipositor. — Fig. 10, the right elytron, magnified. 



Hab. Panama, Bugaba (Champion). 



5. Eriolus longipennis, Kedt. 



Eriolus longipennis, Redt. Monogr. der Conoceph. p. 36. 



Elytra maculis runs conspersis notata. Femora postica extus multispinosa, intus spinis 6 invicem remotis. 

 6 . Long. 25 ; pronot. 10 ; elytr. 35 ; femor. post. 15 millim. 



Hab. Costa Rica (coll. Brunner). 

 Unknown to us. 



6. Eriolus brevipennis, Redt. 



Eriolus brevipennis, Redt. Monogr. der Conoceph. p. 37. 

 Hab. Guatemala (coll. Brunner). 



Unknown to us. 



[BASILEUS *, gen. nov. 



Corpus modice crassum. Caput sat magnum ; oculi globosi. Vertex inter antennas primo articulo antennarum 

 fere duplo latius, ilium haud superans, transverse truncatum, trituberculatum, cum fastigio frontis 

 confusum, ab illo per sulcum subtilissimum sejunctum. Antennae longae, gracilimae. Pronotum sulcia 

 2 distinctis impressum, postice parum productum, margine paulum arcuato ; lobi laterales margine infero 

 obliquo, subsinuato, angulo postico leviter producto. Etytra elongata, semimembranacea, apice rotundata, 

 campo marginali densissime reticulata, parte ulnari late reticulata. Alae longae, apice angulatae. Femora 

 omnia subtus utrinque spinulosa ; lobis genicularibus acutis, posticis spinosis. Tibiae spinis gracilibus 

 armatae. Prosternum margine antico utrinque spina brevi armatum. Mesosterni lobi triangulares, 

 deflexi, apice spinosi. Metasternum trapezinum. Segmentum anale $ truncatum. Ovipositor gracilis, 

 arcuatus, modice longus, valvis inferis brevioribus. 



This genus approaches Idostethus, Redt., differing from it in the trilobate vertex, 

 the non-coriaceous elytra, and the slender, arcuated ovipositor, this latter being straight 

 and dilated as in Liostethus. The form of the head, with its trilobate vertex, is suggestive 

 of that of the genus Lirometopum, but it is much smaller. ' In IArometopum, too, the 

 prosternum is unarmed. 



l. Basileus diadematus, sp. n. (Tab. XIX. figg. 11, 12.) 



Viridis ; corpore frequenter fulvo vel fuscescente. Caput et pronotum polita. Verticis processus transverse 

 quadratus, margine antico bisinuato, trituberculato, tuberculis lateralibus rotundatis, medio trigonali. 



* fiaaiXevs, rex. — Videtur scilicet ejus caput quasi coronatum. 



BIOL, centr.-amek., Orthopt., June 1898. 3 Dd 



