104 OETHOPTEEA. 



small that it can be drawn beneath the anterior field without folding ; the anterior field 

 is very long in proportion, so that there is no apical margin to the wing, this being 

 transformed into the posterior margin of the anterior field and forming with the margin 

 of the posterior field the hind margin of the whole wing, without any interruption. 

 There is no anal notch, and in consequence of this the branches of the ulnar vein all 

 tend to the hind margin of the wing, none being true apical branches. These branches 

 are rather arcuated, with an anterior concavity, or are more or less transverse. 



Synopsis generum. 



1. Tibiae fortiter spinosaej intermediae et posteriores (saltern intermediae) supra 3-seriatim 

 spinosae ; omnes apice calcaribus 6 (quando f eminae sunt apterae, 7) . Abdomen latum, 

 in maribus fere orbiculare. 

 2. Sexus dissimiles. Elytra c? abdomen longe superantia, subniembranacea, apice rotun- 

 data, $ brevioria, coriacea, vel nulla. Tarsi $ inter ungues arolio destituti. Caput 

 obtectum. Pronotum 6 ellipticum vel reverso-crapezino-rotundatum, supra caput 

 cucullato-fornicatum. Lamina supra-analis $ plus minus quadrata, d transversa, 

 parum fortiter incisa. Alarum vena media apice ramosa; venae campi marginalis 

 longitudinales. Insecta majora, fusca vel testacea, lanoso-pubescentia. — Stirps 

 Heterogamy a. 

 3. Feminarum ultimum segmentum ventrale in medio apice rotundato-tumidum, haud 

 fissum. Marium lamina supra-analis haud producta. Tarsi 6 inter ungues arolio 

 instructi. (Genera orbis antiqui.) 

 4. Feminae apterae. Tibiae $ 6 apice calcaribus 7. — [Heterogamia, B.] 

 44. Uterque sexus alatus. Tibiae apice calcaribus 6. — [Dyscologamia, Sss.] 

 33. Feminarum ultimum segmentum ventrale apice rostrato-compressum, ac fissum. 

 Marium lamina supra-analis producta, rotundata vel bilobata. Tarsi c? inter 

 ungues arolio nullo. Tibiae apice calcaribus 6. Uterque sexus alatus. — Homceo- 

 gamia, B. 

 22. Sexus conformes. Elytra in utroque sexu parum dissimilia, coriacea vel partim mem- 

 branacea. Tarsi arolio minore instructi. Pronotum anterius haud cucullatum, 

 verticem frequenter liberans. Lamina supra-analis rotundata (vel <5 transversa). 

 Alarum vena media haud ramosa ; venae campi marginalis longitudinales vel obliquse. 

 Tibiae apice calcaribus' 6. Insecta venuste colorata, dense piloso-velutina. — Stirps 

 Corydia. 

 3. Femora anteriora spina geniculari destituta ; subtus in utroque margine spina apicali 

 instructa. Ultimum segmentum ventrale $ convexum, haud carinatum. Elytra 

 coriacea. Species majores. — [Corydia, Serv.] 

 33. Femora omnia spina geniculari instructa ; subtus in margine interno spina apicali 

 instructa. Ultimum segmentum ventrale $ carinatum vel apice compressum, sulco 

 divisum. (Species minutae.) 

 4. Elytra tota opaca, velutina. 



5. Alae elytris longiores, condite venosae ; vena mediastina ad marginem costalem 

 stigma diffusum efficiens ; vena discoidalis obsolete percurrens, ultra stigma 

 in ramos longitudinales soluta. — [Euthyrrhapha, B.] 



