— 6 



abdomen assurae íln elongated, elliptical sbape and presumably tbe 

 legs are cast off after tbe flea bas attacbed berself to ber bost. 



In anticipation of obtaiuing more material, inchiding males, aac 

 append bere only a preliminary description of tbe genus and species. 



MAXILLIOPSYLLA n. gen. 



Belongs to tbe suborder Inter/rícipita (frons and occiput not sepa- 

 rated by a sulcus); tbe tbree tboraxical tergites togetber sborter tban 

 tbe first abdominal tergite: no cíc»/f/m present. Anterior margin of 

 bead well ronnded: lower anterior córner produced into an obtnse 

 angular tobe; tbe posterior genal córner produce into a well deve- 

 loped blade-like lobe; posterior margin of bead gently rounded. 



Mouth parts. — Maxillae very long and strongly developed, armed 

 witb fonr longitudinal rows of sbort, stont recnrved teetb wbicb 

 extend nearly to tbeir bases: ejiiphari/nx equal in lengtb to tbe 

 maxillae and armed on its anterior margin witb a series of eleven 

 inconspicuos teetb spaced at wide intervals; mandibles (lateral view) 

 curved, sliari)ly pointed (fang-like). Maxillary palpi probably four 

 jointed (tbe palpi in tbe si)ecimen ar band bave but tbree joints eacb 

 but it appears tbat a fourtb joint bas been broken oft'). 



Legs. — Inasmucb as all tbe. legs except for tbeir coxal joints are 

 lacking and because of tbe fixed parasitic liabit of tbe female, we 

 presume tbat tbey are cast off after sbe attacbes berself. 



Abdomen (distended specimen). — Very large, about two millime- 

 ters in widtb (lateral view) and four millimeters in lengtb, tbe tergi- 

 tes and sternites small and weakly cbitinized, tbe abdomen tberefore 

 is largely membranous and palé in colour. Pygidium inconspicuous, 

 and possessing small bairs and spines. Otberwise tbe abdomen does 

 not possess bair or spines. 



MaxiHIopsylla Lilloi u. sp. 



Tbe cbaracters given under tbe generic description will also serve 

 for tbe sjyecies cbaracterization. Lengtb, about 5 millimeters. A 

 sketcb sbowing tbe principal features of tbe species is given. 



It gives US great pleasure to ñame tbis unique species for doctor 

 Mieuel Lillo. 



