148 Annals Entomological Society of America [Vol. IV, 



allied with the Hystrieiine group of series, the adult being very- 

 distinct in external characters. The minute colored plates of 

 the first stage maggot are evidently an independent specializa- 

 tion, and are interesting as indicating the probable method of 

 development of the more perfect colored scale-like plates of the 

 leaf-larvipositing forms. 



Pseudomyothyriine series — This is the 27th series above. 

 Pseudomothryia perplexa sp. nov. (Peru) dissected and drawn, 

 TD 4001, 4035. Ovaries small, of only about six ovarioles. 

 Oviducts about one-third as long as ovary, common oviduct 

 about twice as long as oviduct, spermathecal ducts very elon- 

 gate, tubular glands about the length of latter, preuterus 

 absent. Uterus slender, laterally compressed, in three to four 

 coils, inside each other disposed in a more or less regular spiral, 

 eggs and maggots in single file. The oral spine which terminates 

 the mandibular sclerite of the cephalopharyngeal skeleton in the 

 first stage maggot is very sharp and needle like. Methypostena 

 and Tachinophyto perhaps come here. It is quite likely that 

 Erynnia nitida, the European tachinid parasite of the imported 

 elm-leaf beetle, occurs in North America and had been deter- 

 mined by Coquillett as Hypostena barbata. 



Euzenilliine series — Euzenillia aurea gen. et sp. nov. 

 (Mass.) dissected, TD 350. In this dissection the reproductive 

 organs were not extracted intact, and I can judge only from the 

 maggot which is a wholly new type. The latter is elongate, 

 moderately slender, and thickly clothed all over with short 

 fine minute spines except on posterior half of dorsum. The 

 cephalopharyngeal skeleton is rather slender. The spermathecae 

 are suboval or elongate-rounded, and the larvipositor is normal. 

 A uterus is present, which is probably not long. 



Parexoristine series — Carcelia belongs here. Nielson, in 

 his second paper (1910), has shown the egg to be elongate and 

 pediceled, as in Parexorista. 



Dexiine series — This series needs splitting into several 

 groups. Aside from the typical group, to include Dexia and 

 allies, the following may be given as at present recognizable: 



Almugmyiine series — For Almugmyia and allies, whose 

 reproductive characters are mentioned under the Dexiine series 

 above. Microchaetina probably comes here, and may prove 

 to be the same as the present form. 



