90 KANSAS UNIVERSITY SCIENCE BULLETIN. 



Chrysotus picticornis. 



Loew, Monogr., II, 184; Wheeler, Psyche, June, 1890, p. 328; Aldrich, 

 Trans. Lond. Entom. Soc, 1896, 329. 



Numerous males and females. I have seen it also in abun- 

 dance from Georgia. An easily recognized species. 



Chrysotus proximus. 



Aldrich, Trans. Lond. Entom. Soc, 1890, 326. 



Numerous specimens. The lighter color, as compared with 

 excisus, applies principally to the fore and middle tibise ; the 

 thoracic dorsum also is less blue and more bright green. 



Chrysotus harhatus. 



Synorthrvs barbafiis Loew, Neue Beitr. , VIII, 48; Mon. N. A. Dipt., II, 

 138 (see also p. 134) (male only). 



Chrysotus validus Loew, Neue Beitr., VIII, 63; Mon. N. A. Dipt., II, 175 



(female only). 

 Xiphandrium americanum Wheeler, Ent. News, VII, 152 (both sexes). 



Chrysotus apicalis Aldrich, Trans. Lond. Entom. Soc, 1896, pt. II, 330 

 (both sexes); Ent. News, XI, 533, synonymy. 



Numerous specimens of both sexes. 



As will be seen, this species has had peculiar misfortunes at 

 the hands of the describers, in which I have indicated my share. 

 If the insect could deceive Loew so completely, certainly the 

 later writers may be pardoned. Professor Wheeler called my 

 attention to the identity of his X. americanum with S. barbatus. 

 The remainder of the synonymy is my own. The peculiar col- 

 oring of the femora has been the main guide in associating these 

 descriptions : Hind ones green, middle yellow, fore yellow, 

 with more or less of a dark stripe above, making a very unusual 

 combination. I see no great impropriety in referring the species 

 to this genus. 



Chrysotus paradoxus, n. sp. 



Male: Face narrow, the eyes decidedly approximated, front 

 bright green ; antennae small, blackish, with minute pale hairs ; 

 palpi minute, dark ; dorsum of thorax bright green, the pleurae 

 blackish ; hal teres yellow ; tegula? yellow, with a few hairs 

 which are decidedly pale in the proper light, but otherwise in- 

 distinctly brownish, especially at base. Abdomen bright above, 

 the hairs yellowish or brownish, not distinctly black; venter 

 slightly pale anteriorly ; hypopygium mainly concealed, black, 

 with minute yellowish appendages. I notice two rather strong 





