554 Insccta. PterocUccra. 



infra gpnicul;ila , liim poriTcla , his capiMiio parvo et lablls 

 formato, illis arliculo rlongato , subtus iuflpxo , labiis longis- 

 simis , linrarihns, secus et jiartini sallein formalo , lerminata. 

 Haustelluni selis ilual)us ; supira compressa , crassiore, cylln- 

 drico-acnminala , infra unicanaliculata Inferamcjue \aginante ; 

 liac lenuissinia, acicularl , gracillima, longitudine varia. Palpi 

 cum exlanl prohoscidi, geuicnium inferuni veri- us, inserli, l)re- 

 ves , filiformes , aut suljexlrorsiim crassiores et ad apicem ro- 

 tnndati, crecli, pilosi aut villosi, in cavilale orali inclusl, ultra 

 basln inarliculali. 



Corpus plernmque longum , snbcvllndricnm , in nonnulli» 

 breve et MnscRe clo/nestica' liabllum ref rens. Capiit cute mem- 

 branacea , alliida, aiilice pra^sertiin , \(slitum, (in pliMiiuis 

 quasl \ csiculoso-larvalum) llioracisallilutliiie, /,is lieniis|ib.Trico- 

 trigonum, crassnm, liiorace paulo lalius , /7//,'> coiiipresso-sub- 

 liemisplianicum ; f.icie longi; lorsum bisnlcala; fronle s;rpius 

 producla ; ociilis IaliM"alibus , ovatis atit siibo\ alibus , inlegris; 

 ocellis niodo niiUis, iiiodo cxlanlibiis el tiinc ininimis, \alde 

 approximalls , verlicl imposilis. 'J'riincus bre\ilpr cylindricus, 

 anlice recla irans\erse Iruncalns, angnlis anlicls prominulis, 

 tubei cul ir<irni ilnis. Jlalteres in pluiimis subniidi. jlhdomen 

 lum elongaluin , basin versus panlaliin altenualiim , atl apicem 

 incrassalum aul subclavalnm , liainalo-Incurvnm , appenilicibus, 

 nncinnlis aiil dcnl ibns \ ariis, prominenlibus, inslriicliim; luni 

 breve, depresso- Irigonum. Pedes modo bre\. lores , crassiores , 

 glabriuscnli; modolongiores, graciliores, pilosi aut bispidnli ; larsi 

 omnium pulvillis dnobiis, elongalis. Alcf Sfppius incumbenles, nt 

 in syrphiis fi_u'e reticulala? ,■ cellula^ discoldales pauliim tliversas; 

 jnteriia niinima ; exlerna ner\o spurio noii secala ; celliila analls 

 ad apicem lougius peliolala, in nonnullis niinhna ; cellula se— 

 cunda llnibi jioslicl arere Inlermcdias a terlia ejusdem limbi dis- 

 tincla sen nervo produclo discrcla. 



/. At-itenncv ( capifis faciei non incitmhentes , erecfce , 

 porrectce , ad articulum secundum subgeniculatce^ , 



