of some new Exotic Species of AcroceridcB. 97 



is the engraving in the English work quite correct nor agreeable 

 to my original drawing, from which it was engraved. 



Pterodontia Macquartii, Westw. 



Pt. atra, scutello abdominisque lateribus rufis, pedibus flavis, 



femoribus anticis nigris. 

 Long. corp. 3| — 4| lin. 

 Habitat in Nova Hollandia. 

 In Mus. Reg. Paris. 



Syn. Pterodontia flavipes, Macquart, Dipt. exot. 1, p. 175. 

 An var. Pt. Mellii, Erichs. ? 



Pterodontia analis, Westw. 



Pt. nigra, segmentis apicalibus abdominis fulvis, alulis margine 



nigricantibus, alis hyalinis, venis albidis, pedibus pallidis. 

 Long. corp. lin. 2, expans. alar. lin. 5. 

 Habitat in Georgia Americae. 

 In Mus. Britann. 



Nigra, nitida, nigro-villosa, tenuissime punctata. Caput nigrum, 

 oculis postice brunneis. Antennae prope os insertae, articulo 

 terminali gracillimo brevi, apice clavato setigero. Thorax 

 cum scutello niger. Abdomen haemisphericum, segmentis 

 duobus basalibus maculaque media ad basin segmenti se- 

 quentis nigris. Tota pars abdominis relicta apicalis fulva. 

 Alae hyalinse, iridescentes, transversim rugosae. Venae 

 albidae distinctae, area discoidali sub apicem alarum postice 

 aperta. Tegulae fuscescentes,marginibus nigricantibus. Pedes 

 albidi, femoribus basi obscurioribus, unguibus nigris. 



ACROCERA. 



Acrocera nigrina, Westw, 



Acr. nigra, nitida, tenuissime punctata ; punctis duobus minutis 

 ad marginem posticum penultimi segmenti margineque tenui 

 segmenti ultimi albidis; pedibus obscure luteo-albidis, fe- 

 moribus tibiisque in medio obscurioribus ; alis fusco pallide 

 tinctis, venis piceis distinctis ; alulis fusco-marginatis. 



Long. corp. lin. 2, expans. alar. lin. 6|. 



Habitat in Georgia Americde. 



In Mus. Britann, 



VOL. v. N 



