CHARLES P. ALEXANDER 27 



fleshy organ (a) directed caudad, enlarged at the base, pointed at the tip, their 

 inner surface at the base with a great patch of chitinized bristles which are 

 continguous with those of the opposite side in a position of rest. Pleural 

 appendages consisting of an outer, very slender, subcylindrical, fleshy lobe, 

 and an inner appendage consisting of a subchitinous arm ending in two 

 chitinized lobes; the outer lobe is subrounded at the apex, the inner one pro- 

 duced cephalad into a short, cylindrical point. Ninth sternite deeplj^ spht 

 medially. Eighth sternite small, widely separated from the 8th tergite; from 

 the middle portion of this sternite arises a tripartite appendage (see plate V, 

 fig. 6) consisting of a long median lobe which is curved upward in dried speci- 

 mens but becomes straightened out when the specimen is boiled ; on either side 

 of this elongate median lobe is a small, pale lateral lobe. 



The female is similar to the male with the antennae shorter; the ovipositor 

 with the upper valves long, slender, subacute at their apices and slightly up- 

 curved; sternal valves shorter and slightly higher. 



Habitat. — Ecuador. Holotype, cT, Alaoiisi, Ecuador, alti- 

 tude 9450 feet, June 18, 1914 (Parish coll.). Allotype, 9, 

 topotypic. 



The specific name is that of a native tribe of Ecuador; called 

 also Xibaro and Gibaro. 



I regard this species as being the second most generalized 

 member of the monilifera group, exilis being a little more primi- 

 tive in many respects. 



The two known species of this group with the antennae short 

 in both sexes may be separated by the following key: 



1. Head and thorax dark gray with a narrow dorso-median line nmning the 

 length of the thorax; male hypopygium without a distinct caudal pro- 

 longation to the ninth pleurite; eighth sternite with the lateral lobes of 

 the tripartite appendage long; abdomen of the female long and slender 

 (20 mm.). (Peru) exilis sp. n. 



Head light brown passing into gray on the occiput; thorax light brownish 

 gray with brown stripes and numerous brown spots on the interspaces 

 between these stripes; male hypopygium with a distinct fleshy lobe 

 directed caudad and situated on the ninth i^leurite; eighth sternite with 

 the lateral lobes of the tripartite appendage short; al)domen of the female 

 of moderate length (16 mm.). (Ecuador) jimro sp. n. 



Tipula quichua sp. n. 



Monilifera group; antennae, bicolored; thorax light gray with a deUcate 

 dark brown dorso-median line running the entire length; wings largely gray 

 and white; femora with the tips brown and a subterminal yellow ring. 



Female. — Length, 21 mm.; wing, 1.5.2 mm.; abdomen, 14.5 mm. 



Frontal prolongation of the head light l)ro\\^ushgray; palpi short, ilark brown. 

 Antennae with the three basal segments light yellow; fourth segment with the 



TRANS. AM. ENT. SOC, XLII. 



