DII'TKKA ( i:cll>OMVII).E. 



beneath it in Anarete is absent from Lithomyza. The tibiic are destitute of 

 spurs, but furnished with a posterior row of slight, recumbent spines. 



LITHOMYZA CONDITA. 



I'l. 5, Figs. 34-36. 



Utloimyzacondita Scucld., Hull. IT. S.GoL 'i.-cigr. Surv. Terr., Ill, 746(1877); in Zittcl, Hanilh. <1. 



Palieont. I, ii, 812, Fig. 1089 (1SS5). 



b'epresented by a single specimen in an unusually perfect condition, 

 although somewhat indistinct. The joints of the antennae are diHimlt to 

 determine, but with little doubt are nine in number: although short, they 

 are not so abbreviated as in Anarete, the joints being twice as Ion- as 

 ln-o;id : toward tin- tip, they grow smaller. The legs are long and bristly. 

 The fork of the third longitudinal vein is at the center of the wing, and 

 nearer the base than the extremity of thy first longitudinal vein. There is 

 :i taint indication of a transverse vein between the first and second longi- 

 tudinal veins, about midwav between the fork of the third longitudinal vein 

 and its .>eparation from the second. There is also a faint and very doubt- 

 ful indication of an oblique cross-vein just beyond the transverse vein men- 

 tioned, running from the lir-i longitudinal vein to the costa. 



Length of body, 2.7"""; of antemiiC, 0.75"""; of wings, 2""": tore 1> 



0.7(1) : middle legs, 2 ; hind logs, 2.4"""; hind tibia', 0.56 : hind 



tarsi, 1.2S""". 



Chagrin Valley, White River, Colorado. One specimen. ( \V. 



