INSECTA BRITxVNNICA. 



DIPTERA. 



SUCTOEIDEA. 

 Family I. PULICIDyE. 



The cliaracters of Sudoridea, in Vol. I. p. 4 of this work, will also 

 serve for the PnUcidce, which is the only Family in that division. 



Genus I. PULEX. 



PuLEX, L. S. N. ii. 1021 (1753); Latr. ; Lea. ; Duges; Bouche; Newm. 

 Pulex et Ceratophi/lhis aut Ceratopsylhis, Curt. Pulex et Ischiopsyl- 

 lus, Westw. 



Corpus compressura, coriaceum, nitens, setosum. Oculi parvi, rotundi, 

 simplices. Mandibulre setiformes, compressa?, marginibus serrulatis. 

 Lingua nulla. Maxilla; parva3, lamelliformes, coriacea?, subtriangu- 

 lares. Palpi maxillares 4-articulati. Labium parvum, meud)rana- 

 ceum. Mentum minutum. Palpi labiales triartioulati. Antennae 

 4-articulat0e ; articulus quartus incisuris transvcrsis. Abdomen seg- 

 mentis septem. Pedes longi ; postici saltatorii; coxa3magna3; fe- 

 mora robusta ; tibia} setosaj ; ungues validi. 



Body compressed, hard, shining, setose. Eyes small, round, simple. 

 Mandibles composed of two elongated, flattened seta), with a central 

 rib, and with the edges finely serrulated. Lingua obsolete. Maxilhu 

 small, lamelHform, coriaceous, subtriangular. Maxillary palpi four- 

 jointed, attached to the base of the maxilla3. Labium small, mendjra- 

 nous. ]\Ientum smaller than the labium. Labial palpi three-jointed, 

 seated on the apex of the labium. Antenna? four-jointed ; third joint 

 very minute ; fourth with transverse incisions, and apparently articu- 

 lated. Prothorax, mesothorax, and metathorax sliort. Abdomen com- 



VOL. IV. B 



