2-18 THOMAS SAY FOUNDATION 



Taeniopteryx grinnelli Banks. 



(Plate 46, fig. 6.) 

 1918. Taeniopteryx grinnelli Banks, Bull. Mus. Comp. Zool., 62:8. 



Length to tip of wings, male, 12 mm. Expanse, male, 

 20 mm. 



General color black with lightly infuscated wings. 



Head blackish, not quite as wide as prothorax; a de- 

 pressed area between the hind ocelli ; hind ocelli more than 

 twice as close to the eyes as to each other ; antennae black- 

 ish. 



Prothorax blackish brown with about fifteen to eighteen 

 shiny flat tubercles ; wider than long ; sides convex ; angles 

 rounded. Legs brown, darker above ; tarsi blackish. 

 Wings lightly infuscated, especially at the tip and at the 

 cord so as to leave a clear band between the cord and the 

 tip ; base of wing subhyaline ; subcosta reaches to the 

 cord ; two or three costal crossveins before the end of sub- 

 costa and one beyond. 



Abdomen blackish with a yellow tip ; cerci of male com- 

 posed of about six segments. 



Male. Supra-anal lobe short, erect, enlarged toward 

 the tip where it is broadly rounded ; at the base of each 

 cercus a slender curved or sigmoid pointed process di- 

 rected backwards; subanal lobes asymmetrical (much 

 shriveled up in dried specimen) ; ninth abdominal sternite 

 much prolonged into a subgenital plate which reaches far 

 past the tip of the abdomen and is closely beset with long 

 hairs ; subgenital plate without a ventral appendage. 



Female, unknown. The female cotype of Banks appar- 

 ently does not belong here. It is paler in color, the wings 

 are entirely clear, the markings on head and prothorax 

 are different and it measures only 11 mm in length. 



Type, male, No. 10050, April 10, 1905, Millard Canyon, 

 Los Angeles, Pasadena, Calif. (Banks Coll., Mus. Comp. 

 Zool., Cambridge, Mass.). 



Taeniopteryx oregonensis, new species. 



(Plate 44, figs. 7, 8.) 



Length to tip of wings, male, 12-13 mm. Expanse, 

 male, 20-22 mm. 



General color black with lightly infuscated wings. 



Head about as wide as prothorax, blackish with yellow- 

 ish inside the eyes and sometimes within the depressed 

 area between the hind ocelli; occiput somewhat rugose; 

 hind ocelli more than twice as close to eyes as to each 

 other ; antennae black, with about fifty segments. 



