Nu. 19CC. SYXOPSIS OF XEOTROPICAL L/J/.YOB/.Y.E— .ILEAM-YDC/?. 501 



Habitat. — llolotypc. — Female, Esperito Santo, Brazil. Received 

 from Stautliuger and Bang-IIaas. 

 Type. — In author's collection. 



MONGOMA NIVEITAKSIS, new species. 



Dark brown; all tarsi white; wings hyaline. 



Female. — Length, 6.S-7 mm. ; wing, 6.1-6.3 mm.; Iiind leg, femur 

 9 mm.; tibia and tarsus together, 15 mm. 



Head: rostrum and palpi dark brown; antenna moderately elon- 

 gated, dark bro^\^l. Front, vertex, and occiput dark brown. 



Thorjxx: pronotum largely concealed from above by the forward 

 projecting mesonotum, viewed from the side, the prothoracic scutel- 

 lura is high, bearing six prominent bristles on its margin; separated 

 from the scutum bj' a deep notch; pronotum dark brown. Meso- 

 notum veiy gibbous, very dark browTi; scutum, scutellura, and post- 

 no tum dark brown; pleurae 3"ello^vish brown. Halteres long, slender, 

 browTi, the stem palest. Legs: coxae and trochanters dull yellowish- 

 brown; femora dark olive-bro-mi; tibia bro^vn, extreme base pale; 

 tarsus, segments one aiid two bro^vnish- white; three to five white, 

 except the claws, which are brown. 



Wings: hyaline, slightly darker toward the tip; stigma brown; 

 veins bro%vn. Venation, (See fig. 13.) 



Abdomen: tergum dark b^o^vn; sternum yellowish-brown; ovi- 

 positor, valves very long, slender, dark -brown basaUy, remainder 

 lighter brown. 



The ])aratypo has the tip of the tibias and all of the tarsal segments 

 white. 



Habitat. — Holotyjie. — Female, El Yunque, Porto Rico, West Indies; 

 2,850 feet; Feb. 25, 1900 (Coll. C. W. Richmond). Paratope.— 

 Female, with the type, Feb. '27, 1900. 



Type. — In U. S. National Museum collection (No. 14920). 



MONGOMA EXTENSA, new species. 



Brown; small, cross vein r slightly before the fork of R 2+3. 



Female. — Length, 5.1 mm.; wing, 4.9 mm. Head: rostrum jiale; 

 antennse and palpi brown; front and vertex brown; occiput and 

 cenncal sclcritcs rather palor brown. 



Thorax: dorsum brownish-yellow, the meso thoracic scutum pale 

 yellow in the middle and on the sides. Halteres pale, whitish, knob 

 rather brown. Legs brown, the feet rather lighter-colored, dull vellow. 



Wings: subhyaline, a triangular, pale brown, stigmal spot. Vena- 

 tion: Rj+3 hi a line with R2, wliioh is shorter than it; Rj+5 leaving 

 R2 at an angle of about 60°, very long. Fork of Rj+3 opposite the tip 

 of R,. Cross vein r very indistmct, slightly before the fork of R^^. 

 Cu, rather close to first anal at its tip, the distance separating them 

 at the wing margin only as long as Scj. (See fig. 11.) 



Abdomen brown. 



