NO. moG. syyopsis of neotropical limxobi\.t^—a lexa nder. 497 



Abdomen: tergum dull j^cllow, tip of each segment light brown; 

 lateral margin of the sclerites broadly dark brown. (Terminal seg- 

 ments broken.) Sternum pale wliitish, a narrow yellow median 

 stripe, which sulvapicallj' broadens out over the entire sclcrite. 



Willis: suhhyaline with a faint j'ellow tinge; brown clouds at end 

 of R,, R;, around cross vein r, at fork of R,+3, at origin of Rj+,, along 

 remainder of the cord, along cross vein m and the deflection of Mj. 

 Venation: Sc long, appro.ximating R, at the tip as in the genus; 

 r nearer to tip of R, than to the fork of R,+3; Rs long, strongly arcu- 

 ated at its origin, then running parallel to U^; R,^, in a line with Rs 

 and R,; R, strongly curved cephalad at its tip; R3 strongly curved 

 caudad at its tip, so that cell R, is very broad on its distal portion; 

 deflected portion of R^+j very long, so that cell R5 is much nearer the 

 base of the mng than cells R5 or first IL. M in a direct hne with M3; 

 M,+, fused for a long distance beyond m. Basal deflection of Cuj 

 shghtly anterior to the fork of M. (See fig. 39.) 



Hahitat. — Ilolotype. — Corumba, Matto Grosso, Brazil, April (H. II. 

 Smith, coll.). 



Ti/pc.—Jn American Museum of Natural History. 



LECTERIA ARMttLARIS Fabricius. 

 Tipula armillaru F.\BniCTrs, Syst. Antl., 1S05, p. 26. 

 Limnobia armillaris Wiedemann, Dipt. Exot., vol. 1, 1821, p. 13; Auss. zweif Ins 



vol. 1, 1828, p. 25. 

 Limnobia calopus W.^lker, Ins. Saund., vol. 1, 1856; Dipt., p. 439.— Hunter, Trans. 

 jVmer. Ent. Soc., vol. 26, 1900, p. 293.— Kertese, Cat. Dipt., vol. 2 1902 

 p. 171. 

 Lecteria armillaris Osten S.\cken, Studies, etc., pt. 2, 1887, p. 206.— Kehtesz, Cat. 

 ^ Dipt., vol. 2, 1902, p. 218. 



J/aZc— Length 9.2-17.8 mm.; wing, 10.2-12.S; abdomen 13 mm.; 

 antenna, 3 mm.; legs, hind, femora, 9.6-12.2 mm.; tibia, 9.3-11.6; 

 tarsus, 6-8.9; middle, femora, 7.8-10.8; tibia, 7.4-10.2; tarsus, 6.4- 

 9.4; fore, femora, 7.2-9.8; tibia, 8-10.4; tarsus, 6.9-10.4. 



Head: rostrum and palpi dark brown; vertex and occiput dull 

 blackish-gray with numerous long dark brown hairs; front dull gray 

 Antennae rather short, dark brown, the flagellar segments with scat- 

 tered long brown hairs and densely covered with shorter appressed 

 hairs; genge lighter brown. 



Thora.x: pronotum dark gray-brown; mesonotum, praescutum 

 with an indentation on its margin above the spiracle ; light gray with 

 dark velvety blackish stripes, median one broadest near the center of 

 the sclerite, extends back to the suture; on cither side of the middle 

 stripe is a lateral one wliich originates near the cephaUc margin of 

 the sclcrite, forks at about one-third its length, the inner branch con- 

 tinumg chrectly back to the suture , the outer branch broadens out on 

 the side of the sclerite, inclosing a rounded yellowish spot at its 

 09077°— Proc.N.M.ToI.44— 13 32 



