204 KANSAS UNIVERSITY QUARTERLY. 



Chrysomyia segmentaria Fabr. 

 Miisca segmentarUt Fabr., Wied. 

 Clirysoniijia liyacinthina R. D. 

 Liicilla hyacJnthina Macq. 

 Lucilia nubipe7i?i?s Rond. 

 Mya semidiaphana Rond. 



Wiedemann expressly states in his preface that he had access 

 to the collection of Fabricius and to the Lund collection, from 

 which Fabricius described many species. Wiedemann's positive 

 assertion, therefore, that his M. segmentaria is that of Fabricius 

 and that Fabricius made a mistake in his description must be 

 accepted. Rondani sugges'ted the name Lucilia nubipennis in 

 place of L. segmentaria W^ied., which he considered different on 

 account of the difference in the descriptions above referred to ; 

 but, since segmentaria Wied. is the same as segmentaria Fabr., 

 the name suggested by Rondani must be dropped. 



Desvoidy's description of ('. ]i,yacinthi/na agrees with specimens 

 of C. segmentaria before -me. Desvoidy's name must therefore 

 be given up. 



Macquart thought he had Desvoidy's species, but referred it 

 to Lucilia. Rondani's description of Mya semidiapliana agrees 

 with specimens before me, except that he says the halteres are 

 white. Some of my specimens have pale yellow halteres, and 

 such a color difference is of no specific value. 



Eight males and three females ; Chapada ; November or un- 

 dated. 



There is very little to add to Wiedemann's description of the 

 color of this species. He says that the thorax is yellow on the 

 four corners and that the pleurae are ferruginous yellow, though 

 if looked at in a certain direction they have a green-gold luster. 

 This is true of but one of my specimens. All the rest have 

 these parts of the same color as the dorsum of the thorax. The 

 tibia' and tarsi may be almost as yellow as the femora. 



For about the middle two-fourths of the front the eyes of the 

 male are almost in contact, the frontal vitta having entirely 

 disappeared and the geno-vertical plates being reduced almost 

 to nothing. Transfrontal bristles are present only on that part 

 of the front which is ventrad this narrow portion. The great 

 ocellar bristles are small and parallel. The lesser ocellars are 

 hardly visible. The usual vertical bristles are absent, except a 

 small inner vertical. 



