Capt. P. P. King's South American Hymenoptera. '.Vil 



in Plamciplte. Pectus nigro-villosum. Pedes antici breves, raptoiii, 

 coxis inagnis : femora crassa, coiiipressa, apice testacea. Tibke breves, 

 nonnihil arciiatse, testacese. Tarsi testacei, articulo primo lato compresso 

 apice obliqufe producto, articulis intermediis brevissimis pari modo pro- 

 ductis quasi digitatis. Pedes posteriores mediocres, coxis magnis, fenioii- 

 bus crassis, tibiis baud serrulatis, sed subtiliter spinulosis. Alee cyanea-, 

 nervuris ut in Pompilo Heroe, &c. dispositis. Abdomen glabrum, chaly- 

 beo-micans. 



A single specimen of this remarkable insect was taken at Cape Gregory, 

 Straits of Magellan, which I have the pleasure of dedicating to Captain 

 P. P. King. 



As this insect partakes of the characters of both Pompilus and Planiceps, I 

 have not ventured to refer it to either. It seems more nearly aUied to the 

 former, from whicli the raptorious fore legs would be scarcely sufficient to 

 distinguish it without the peculiar head. The trophi are unluckily lost ; but 

 there are great variations of them within the limits of the genus Pompilus as at 

 present constituted. 



*43. ScoLiA QUADRiMACULATA. Fabr. 



The male, which seems to have been unknown to Fabricius, has a yellow 

 spot on the basal joint of the abdomen, which has a chalybeous tint ; and the 

 2nd, 3rd, and sometimes the 4th segment are margined with yellow, uniting 

 tlie lateral spots, which are smaller and paler than those of the female. 



Rio de Janeiro. 



44. SCOUA ARGENTEA, «. S. 



A^igra ; abdomine argentato. Fem. 



Long. Corp. 9^ lin. Alar. 17 lin. 



Fem. Nigra, brevitfer hirta. Caput et thorax vag^ punctata ; mefathoraj sub- 



laevis. Pedum calcaria nigra. Alee lutescentes. Abdomen argentatum, 



incisuris albido-ciliatis. 

 St. Paul's. 



45. MVRMECODES SCOLI^EFORMIS, rt. A'. 



Niger ; vittdfrontali et antennis testaceis. Fein. 

 Long. corp. 9 lin. 



