206 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



before ine, 1 cannot give a detailed description; but the following state- 

 ment, prepared from some data kindly furnished by Mr. Edwards in a 

 letter, will render the species recognizable. 



It is very much like both P. rivosa and albivitta, but differs in the 

 abdomen being unicolorous, brown above, without the brown dorsal 

 stripe (consisting of a series of triangles in P. albivitta, more continuous 

 in P. rivosa) and the whitish lateral borders. The brown design of the 

 wings is nearly the same, but the brown is not continued toward the 

 margin, along the last section of the fifth vein; it thus forms an angu- 

 lar stripe along the central cross-veins and the anterior section of the fifth 

 vein ; the hyaline space inclosed between this stripe and the brown an- 

 terior border is smaller and more curved than in P. albivitta. 



The interruption of the brown stripe along the fifth vein, before reach 

 ing the margin, occasionally takes place in both P. rivosa and albivitta ) 

 at least, I consider P. contermina ^Valker, which shows this peculiarity 

 as a mere variety of P. albivitta. 



Ehaphidolabis spec. — A single specimen from Crafton, San Bernar 

 dino, Gal., has the wings exactly like Monogr., iv, tab. ii, f. 17. The 

 thorax having become greasy, I am not able to ascertain whether it u 

 B. tenw'pes or not. 



List of Tipulid^e brevipalpi from Colorado. 



Dicranomyia longipennis. — Europe; Atlantic States; Denver, Colo 

 (Uhler). 



Limnobia indigena. — Atlantis States and Colorado (Kelso's Cabin, foo 

 of Grays Peak, at 11,000 to 12,000 feet altitude, July 6, A. S. Packard) 



Empeda n. sp. — Georgetown, Colo., July 8 (A. S. Packard). 



Erioptera caloptera. — Atlantic States and Colorado. 



Symplecta punctipennis. — Europe and Xorth America ; also in Chili 

 (Boulder City, Colo.., June 29, A. S. Packard ; Denver, P. R. TJhler.) 



Amalopis n. sp. — Idaho, Boulder, Georgetown, Colo., June, July (A 

 S. Packard). Very like the undescribed species from Southern Call 

 fornia, mentioned above ; perhaps identical. 



Of Section VII, Cylindrotomina, no species has been discovered i 

 California yet, nor in any part of the Western Territories. 



Section VIII. — Ptycliopterina. 



Ptychoptera lenis u. sp. — Hale and female. — Antennae black, exceii 

 the first joint, which is red ; base of palpi also reddish ; hypostom 

 reddish, in some specimens darker ; front black, shining. Thorax blact 

 subopaque; pleura3 silvery-pruinose ; scutellum reddish. Abdome 

 black, shining; male genitals dark brown; ovipositor reddish. Le 

 reddish, including cox?e, which are more or less black at the root, an 

 have a more or less distinct black streak about the middle ; hind cox 

 black, except the tip ; femora brown at tip ; tibire brownish, darker ; 



