Mr. E. Newmans Characters of Dohrnia. cxxxiii 



Art. XXI. — On the Characters and Affinities of Dohrnia, an Australian Genus of 

 Hormocerous Coleoptera. By Edward Newman. 



Class — Coleoptera. 



Stirps — Hormocera, Newman. 



Natural Order — Stenelytra, Latreille. 



Family — (EdemeridjE, Leach. 



Genus — Dohrnia. 



Caput subexsertum, subpronum, facie subelongatd ; antenna corpore vix breviores, basi 

 distantes, tuberibus prominulis sites, ll-articulata ; articulo \mo longo, paulld 

 curvato, extus crassiori ; 2do 3tioque simplicibus, brevioribus, cylindraceis, graci- 

 libus ; 4to iter urn breviori, simplici; bto pracedenti longitudine pari, difformi ; 

 6to breviori, iterum difformi, complanato, uno latere dilatato ; 7mo bto longitu- 

 dine pari, difformi, horizontaliter excavato, profundi concavo, poculiforme, mar- 

 gins elevato ; 8vo minori, breviori, tamen complanato, dilatato ; 9no lOmoque valde 

 brevioribus, subpyriformibus, ultimo 2 pracedentibus longitudine aquanti, sim- 

 plici, cylindraceo, basi apiceque acuto. Oculi subrotundi, laterales, valde dis- 

 tantes, prominentes. Labrum magnum, fere quadratum, margini antico medio 

 emarginatum, angulis obtusis : mandibular arcuata, apice bifida, margine antico 

 tumidce, coriacea, paulld ciliata : maxilla galeata, maxipalpi majores 4-articu- 

 lati, articulo basali minuto ; 2do triplb longiori, extus crassiori; Stio pracedenti 

 longiori, paulld crassiori, ultimo 2do longitudine aquanti, dilatato, subtrigono, 

 margine antico oblique truncato, angulis obtusis ; galea articulata, paulld genicu- 

 lata, articulo apicali longiori, apice incurvo, pilis curvatis obsito ; lacinia minori 

 obtusa, pilis curvatis obsita : labium margine antico subrotundum, medio depres- 

 sum ; ligula biloba, lobis rotundatis ; labipalpi breviores, minores, 4-articulati, 

 articulis 1 — 3 brevibus, crassis, Ato longiori, apice tumido, subrotundato, apice ob- 

 lique truncato. Prothorax capite paulld angustior, latitudine paulld longior, 

 postice angustior, subobcordatus. Scutellum minutum, apice rotundatum. Ely- 

 tra longa, linearia, flexilia, dehiscentia, prothorace latiora. Pedes mediocres, 

 simplices, heteromeri. Abdominis segmenta 5 tantum patentia, ultimo fisso, fs- 

 sura lobos binos, magnos, sexuales, rotundatos, fimbriatos amplectitur. 



Dohrnia miranda. 



Caput nigrum, facie palpisque ferrugineis ; antenna nigra, articulis 3tio Atoque piceis, 

 7mo disco albo, 8vo extus albido ; prothorax rufus ; elytra nigricantia ; propedes 

 ferruginei, profemorum linea dorsali nigra ; mesopedes nigri, mesotibia basi fer- 

 ruginea; metapedes nigri ; abdomen nigricans, fulgore metallico splendens. {Corp. 

 long. *35 unc. Elytrorum lat. max. *075 unc.) 



Head : — the face rather long and somewhat prone : the antennae nearly of the 

 same length as the body, geniculated, the 2nd joint united with the 1st at a right an- 

 gle, and the remainder nearly following the direction of the second ; moderately dis- 

 IX. APPENDIX. BB 



