228 T. D. A. Cockerell — Descriptions of Tertiary Insects. 



like, but the structure is that of Za'dha. The apical angle of 

 the corium appears to have been broader than in Z. flum'tinti. 

 but the whole dorsal region is very indistinctly preserved. 

 Florissant Station 11 ( W. P. Cockerell, 1907). 



(-4) A Tipulid Fly from the Green River Shales. 



The genus Dicranomyia Stephens is represented in the 

 living fauna of North America by 35 described species. In 

 the fossil state, numerous species occur in Prussian amber, 



Fig. 2. — Dicranomyia rhodolitha., x2. 



according to Loew. Scudder has described eight species from 

 the Tertiary rocks of the Rocky Mountains ; five being from 

 Florissant and three from the Lower White River, at the 

 boundary between Utah and Colorado. A new species is added 

 from Wyoming. 



Dicranomyia rhodolitha sp. nov. 



Male. Length 7 mm ; length of thorax 2 mm , its width l-§- mm ; 

 genitalia essentially as in D. stigmosa Scudder. Eyes separ- 

 ated bv an interval of about 135 jx. 



