Sept., I9I3-] Alexander: Craneflies from Colombian Andes. 207 



lateral prasscutal stripes ; scutellum dull brown, darker, blackish, anteriorly- 

 brighter, yellowish on the sides, this color continued cephalad onto the lateral 

 margins of the scutum ; postnotum dark brownish black with a dull yellow blotch 

 on the cephalic margin, one on either side of the median line. Pleurse brownish 

 black, paler dorsally, an elongate yellow blotch on the extreme lateral edge of the 

 prsescutum, appearing pleural in position, just above the anterior spiracle ; tegula 

 conspicuous, bright yellow ; a conspicuous yellow stripe on the side of the 

 postnotum, also appearing to be pleural in position, this stripe being cephalad 

 of the base of the halteres and cephalo-dorsad of the mesospiracle. Halteres 

 light brown. Legs, coxae and trochanters light brown, the former darker 

 basally, femora light brownish yellow, the fore femora darker, brownish, tibiae 

 brown, tarsi broken. Wings with a uniform pale brownish tinge, cells C and 

 Sc a little brighter, stigma brown, veins dark brown. Venation (see PI. 4, 

 fig. 5 ) ; Cui fuses with M for a distance about equal to the crossvein r-ni and 

 breaks away before the fork of M. 



Abdominal tergites i and 2 reddish brown, 3 reddish yellow with a brown 

 blotch near the base, 4 reddish yellow, 5 to 9 dark brownish black ; sternites 

 I to 4, reddish yellow, 5 to 6 similar, the caudal margins of the sclerites 

 broadly blackish, segments 7 and 8 dark brownish black, the latter at the tip 

 densely clothed with bright orange hairs. Hypopygium with the gth tergite 

 having an oval notch, the caudal margin with abundant chitinized points and 

 denticulse. Pleural suture long, prominent ; pleura bearing two lobes, the outer 

 lobe fleshy, very broad and flat, provided with dense hairs, its tip pointed ; the 

 inner lobe is large, chitinized, especially on the cephalic margin, where it is 

 produced into a large appressed tooth. (See PI. 4, fig. 8.) 



Holotype, c^, Valle de las Papas, March 29, 1912. 



Paratype, c?, with the type. 



This species is named in honor of Dr. A. A. Allen of Cornell 

 University. 



P. allciii is allied to usta Osten Sacken of Costa Rica (Biol. Cent. 

 Amer. Dipt., Vol. i, pp. 17, 18) in the predominance of the black color 

 on the thorax. It differs in many respects, having much more dark 

 color on the head, abdomen with the basal half reddish yellow, not 

 black, etc. 



18. Pachyrhina nigrolutea Bellardi. 



1859. Tipula nigrolutea Bellardi, Ditterologia Messicana, Vol. I, p. 11. 

 One female from Popayan, March i, 1912, by sweeping. 



