1895.] NATURAL SCIENCES OF PHILADELPHIA. 367 



a band, bright yellow; head and thorax more hirsute than in pul- 

 chella; wings hyaline, nearly twice the length of thorax. Antennae 

 black, the scape and following three or four joints beneath, yellow, 

 apical joints of flagellum somewhat curved, particularly the last; 

 eyes, if anything, diverging above; dorsulum and scutelluni closely 

 and confluently punctured, the middle segment above and behind 

 somewhat more coarsely; last joint of fore tarsi broadly dilated; 

 pulvilli small, though discernible; medial femora serrate beneath; 

 first joint of medial tarsi strougly curved, and within near base with 

 four stout spines; second ventral segment with a single, large, 

 prominence, which is hirsute; sixth and seventh segments somewhat 

 carinated down the middle; eighth ventral without a discal spine; 

 last dorsal shaped as in fig. 8, Plate XIV. Length 14 mm. 



Nevada. Easily distinguished by the armature of second ventral 

 and shape of last dorsal segment. 

 7. Monedula plana u. sp. Plate XIV, f. 7. 



S . — Black ; inner and posterior orbits, spot before anterior 

 ocellus, inferior portion of front, clypeus, labrum mandibles except 

 apex, scape and following two joints beneath, narrow line on pro- 

 notum, tubercles, spot on each side of scutellum, metanotum, legs, 

 the coxa?, trochanters, and femora variegated with black, however, 

 spot on each side of first dorsal segment, a band on the following 

 dorsals except the last which is spotted, that on segment 2 broadest 

 and all emarginate anteriorly in the middle, the second most 

 deeply, and a spot on each side of ventral segment 2, yellowish ; 

 flagellum pale testaceous beneath; head and thorax sparsely hirsute; 

 wings hyaline, less than twice longer than the thorax. Apical 

 antennal joints more or less curved but not as strongly as in tuber- 

 culoid; eyes, if anything diverging above; dorsulum and scutellum 

 coriaceous, subtilely and indistinctly punctured, the middle segment 

 more strongly ; last joint of fore tarsi not broadly dilated ; pulvilli 

 indistinct; medial femora strongly serrate beneath; first joint of 

 medial tarsi curved, with several strong spines within near the base; 

 second ventral segment flat, unarmed; sixth and seventh not armed; 

 eighth without a discal spine ; last dorsal as in fig. 7, Plate XIV. 

 Length, 14 mm. 



Custer, South Dakota (Aldrich). 



