464 AUGUST SCHLETTERER. 



Origiiialbeschreibuiigeii 

 der mir unbekannten paläarktischen Arten. 



1. Cereerls acuta Radoszk. 



Ccrceris acuta Radoszk: Reis. Turkest. Mose. 54, 9 Taf, VII. Fig. 6 . 1877 



Flava; antennis supra, abdominis inciswis anoquebrwmeo riifescentibus ; 

 vertice maeula transversa, i^rosterno, inesouoto, mdastcrno tiigris. Alis hyalinis 

 apicc fumatis. Clypxo flaro, elevato et porredo in laminam liberam, fortissitnc 

 acuto cnmrginato. Long. 11 mm. 



2. Cercet'U albo-ati'a Walker. 



Cerceris alho-atra VValkek: List llyiu. 27, o^ . 1871 



$. Black, roughly punctured. Front of the liead with three large 

 yellowish white spots; first and second spots elongated, longitudinal, 

 with a yellowish line, between them; third transe, nearer the mouth. 

 Antennae piceous; first and second joints black; first yellowish white 

 beneath. Thorax with three yellowish white caili, one on each side 

 near the fore border; the third transverse on the bind border of the 

 scutellum; tegulae yellowish white. Abdomen with three yellowish 

 white bands; first adjoining the bind border of the petiole; second in 

 the middle; third subapical. Leg-s yellowish white; coxae and femora 

 black, the latter with yellowish white tips; bind tibiae with a black 

 streak on the outer side. Wings cinereous ; tips blackish ; veins black. 

 Length of the body 4 lines. Var. ß. Femora red; bind femora with 

 a black streak. Length of the body 4 — 5 lines. 



The petiole is much more slender than that of C. vidua. 



3. Cerceris algirlca Schlett. 



Cerceris fasciata Lei-el: Hist, Nat Ins. Hyin. III. 30, o^ 1845 



Cerceris fasciata Lucas: Explor. Scienc. Alger. III. 256, o^, Taf. XIII. 

 Fig. 6 1849 



Caput iiigrum ferrugineo-vilhsum ; /Haadlbidaraii/, ha.'<i, dgpeo, sabgenia, 

 genis maculwpie faeiei apice supero dilafata, Inteo-atÜidis ; puncto post oculos 

 fcrrugimo. Clypci margo anticus snbrotundatus. Antennae: articidis sex 

 primis ultimique apice fcrrugincis, caderis nigris. Prothorax niger, lateribus 

 angulatis , maeula utrinque snpra hameros forruginea. Mcsothorax niger, 

 pnwto calhso fusce ferriiginco. Mdathorax niger, kderum iiosticoram 

 viacnla oblonga ferruginea. Scatclhdn postscutdhnn(/He ferraginca. Thorax 

 ormiis fernigineo-suhvillosns. Abdomen fusco-subcillosum ; supra segmeido 

 pimo ferrugineo ; secimdo , 3tio 4toque ferrugineis , mao-gine postico nigri- 

 canie; fito Otoqne nigris; subtns nigrum, segmentis tribas jirimis ferrugineis. 



