1895.] NATURAL SCIENCES OF PHILADELPHIA. 373 



STENIOLIA Say. 



Steniolia Say, Boston Journ. Nat. Hist., I, p. 366. 1837. 

 Monedula Cressou (in pt.), Proc. Ent. Soc, Phila., IV. p. 469. 1865. 

 Steniolia Patton, Bull. U. S. Geol. Survey, V, p. 364. 1879. 



Females. 



Middle tibiae dilated 2 



Middle tibiae not dilated (markings luteous) duplicata. 



2. Markings of body whitish obliqua. 



" Markings of body luteous." tibialis. 



Males. 



Tibia and first joint of tarsi of medial legs not dilated (markings 



luteous) duplicata. 



Tibia and first joint of tarsi of medial legs distinctly dilated ... 2 



3. Markings of body whitish as is also the pubescence of dorsulum 



and vertex obliqua. 



Markings of body luteous, the pubescence of dorsulum and vertex 

 brownish tibialis. 



1. Steniolia duplicata Prov. 



Steniolia duplicata Proyancher, Add. Hym. Quebec, p. 414, f $ . 



Steniolia scolopacea Handlirsch, Sitzb. Akad. Wissen., Wien., Math.-naturw. 



Classe. Bd. XCVIII, Abth. 1, p. 510, £ $ . 

 Steniolia duplicata Fox, Entom. News, II, p. 195. 



This is, perhaps, our commonest and most variable species. New 

 Mexico (Cockerell); Nevada; Utah; California; Oregon; and Lower 

 California. The spots on the dorsulum may be absent, or enlarged, 

 the curved line on upper surface of middle often broken into spots, 

 or absent entirely; there is frequently a small spot on dorsulum just 

 anterior to the scutellum and the extent of black on femora is vari- 

 able. The markings of the abdomen are tolerably constant, but are 

 subject to some variation and the flagellum varies by having the 

 basal joint beneath only, or all the joints yellowish. 



From Lower California are three males and one female which are 

 on the whole larger than usual and the eyes slightly though dis- 

 tinctly converge to the top; otherwise they agree exactly with scolo- 

 pacea. They may represent a distinct species. 



2. Steniolia obliqua Cress. 



Monedula obliqua Cresson, Proc. Ent. Soc, Pbila., IV, p. 469, O . 

 Steniolia obliqua Cresson, Synopsis, p. 278; Handlirsch, 1. c, p. 511, PL I, f. 

 16, £?. 



Colorado; British Columbia (Handlirsch). 



