260 OETHOPTERA. 



quadratis reticulata. Vena mediastina 6-7-ramosa. Alae infuscatae, longe caudatae. Tibiae anticee com- 

 pressae, tympano utrinque oblongo, intus majore. Pedes postici . . . . ? 

 cf . Long. corp. 9, cum alis 12-4 ; elytr. 8 millim. 



Hab. Nicaragua, Chontales (Janson). 



This very small species does not accord very well with the other members of the 

 genus, the vena stridulans not being broken in a zigzag at its base ; but this difference 

 is perhaps due to the minute size of the insect, the vein not having space to assume a 

 complicated form. The single specimen received is imperfect. 



3. Diatrypus championi, sp. n. (Tab. xill. figg. 2, 3, <? .) 



<S . D. tolteco formis similis at major ; fulvo-ochraceus, capite, pronoto pedibusque subtiliter rufo-punctulatis. 

 Antennas concolores, in nostro individuo haud annulatae. Oculi paulo minus conici, paulo minus antrorsum 

 prominuli quam in tolteco. Pronotum antice coarctatum, paulo longius, margine postico vix arcuato.. 

 Elytra corpus superantia, paulo latiora ; campo anali minus longo. Tense obliquae 5 arcuatae + 2-3 

 minutae ; omnes crassiusculae, prominulae. Speculum latius quam longius ; vena dividente recta, ejus area 

 antica late trigonali, antice rectangula ; area postica obliqua, scilicet postice extus rotundata ; margine 

 postico quam interno duplo longiore. Area apicalis sectoribus 5 : primus rectangulatim areuatus. Campus 

 lateralis membranaceus ; vena mediastina venis 10-12 leviter sigmoidalibus, ultimis 7 parum obliquis, 

 subtransversalibus, instructa. Tibiae anticae utrinque tympano oblongo majore notatae. Tibiae posticae 

 valde spinulosae, supra fusco-punctatse, basi fuscse, ad spinas fusco-maculosae ; metatarsus supra 1 : 5 

 dentatus. Lamina infra- genitalis grandis, conica. 



S . Long. corp. 11*5 ; pronot. 2, latit. 2-6 ; elytr. 11*7, latit. 4-5 ; femor. post. 8 - 5 millim. 



Hab. Panama, Bugaba (Champion). 



4. Diatrypus apithoides, sp. n. (Tab. XIII. fig. 6, $ .) 



$ . Fulvo-ochraceus, valde pubescens. Caput et pronotum rufa ; vertex minus deplanatus ; rostro quam 

 primus articulus antennarum valde angustiore ; subsulcato. Oculi parum prominuli. Antennae annulis 

 fuscis minutis invicem remotis ornatae, ultra medium densius annulatae, apiee fuscae. Pronotum supra 

 aeque longum ac latum, subquadratum ; margine postico in medio arcuato ; lobis lateralibus elongato- 

 quadratis, angulis rotundatis. Elytra abdominis longitudine, rufescentia vel obscura, supra convexiuscula, 

 simul sumpta ovata ; a supero visa cantho laterali arcuato. Campus dorsalis venis longitudinalibus 4, 

 plus minus arcuatis, insuper apiee ramis 2 venae discoidalis, necnon vena intercalata basi incompleta. 

 Venulae transversae regulares, remotae, areolas elongato-quadratas formantes, basin versus elytri evanidae. 

 Campus lateralis venis longitudinalibus 5 : supera furcata, infera minima. Alae infumatae, elytra vix 

 superantes. Tibiae anticae haud dilatatae, extus tympano oblongo, angusto, intus tympano angustissimo, 

 sublineari. Femora postica crassiuscula ; tibiae posticae crassiuscule denticulatae ; metatarsus longiusculus, 

 denticulis 1 : 4 validis. Abdomen supra obscurescens. Lamina supra-analis basi rotundata, apiee rotun- 

 dato-trigonalis. Ovipositor crassiusculus, apiee niger, valde dentatus. 



5 . Long. corp. 7'5 ; pronot. 2*4, latit. 2-1 ; elytr. 8*5 ; femor. post. 7*5 ; ovipos. 5 millim. 



Hab. Panama, Bugaba (Champion). 



This species is very different from the preceding. It has somewhat the facies of a 

 coleopterous insect on account of its convex elytra, and imitates the forms of the genus 

 Apithes ; but its characters are quite those of Diatrypus, the vertex being narrower 

 than in Apithes, the elytra regularly reticulated, the hind tibiae with 5 : 5 spines only, 

 the hind metatarsi longer and slender, and the ovipositor terminated by a short obtuse 

 dentated club, not pointed as in Apithes. 



