InthiswayIobtainedsomemagnificentseriesofAnthidiaandMegachiles,runninguptoadozen。Therewasamelancholysidetothissuccess。Allmyseries,withnotoneexception,wereravagedbyparasites。ThoseoftheMegachile（M。sericans,FONSCOL）,whofashionshergobletswithrobinia—,holm—,andterebinth—leaves,wereinhabitedbyCoelioxysoctodentata（AParasiticBee。——Translator\'sNote。）;thoseoftheAnthidium（A。florentinum,LATR。）wereoccupiedbyaLeucopsis。BothkindswereswarmingwithacolonyofpigmyparasiteswhosenameIhavenotyetbeenabletodiscover。Inshort,mypan—pipehives,thoughveryusefultomefromotherpointsofview,taughtmenothingabouttheorderofthesexesamongtheLeaf—
cuttersandthecotton—weavers。
IwasmorefortunatewiththreeOsmiae（O。tricornis,LATR。,O。
cornuta,LATR。,andO。Latreillii,SPIN。）,allofwhomgavemesplendidresults,withreed—stumpsarrangedeitheragainstthewallsofmygarden,asIhavejustsaid,orneartheircustomaryabode,thehugenestsoftheMason—beeoftheSheds。Oneofthem,theThree—
hornedOsmia,didbetterstill:asIhavedescribed,shebuilthernestsinmystudy,asplentifullyasIcouldwish,usingreeds,glasstubesandotherretreatsofmyselectingforhergalleries。