236 NEW YORK STATE MUSEUM 



the seventh and eighth segments light yellow, with yellow hair. 

 I^gs light yellow ; the extreme tips of the four posterior tibiae 

 black; distal joints of the front tarsi infuseated, as also the front 

 tibiae; front metatarsi about one third longer than their tibiae. 

 Wings hyaline. lienglh 3 to 4 mm. Williston, loc. cit. St Vin- 

 cent Island. 



57. Chironomus similis u. sp. 

 (PI.29, fig.l3) 

 Resembles O. cristatus Wied.; differs in being smaller and 

 in having proportionately longer fore metatarsi. Length 3 to 4 

 mim. 



Male and female. Head brownish, palpi and antennae including 

 basal joint dark brown, antennal hairs of the male yellowish 

 brown. Thorax dusky yellow, the three dorsal stripes and ster- 

 num brown, scutellum yellow, metanotum blackish. Abdomen 

 brown, posterior margins of the anterior segments widely yellow- 

 ish, with cinereous bloom; anterior margins narrowly yellowish, 

 the brown marking prolonged caudad along the middle line; 

 posterior segments almost wholly brown with cinereous bloom. 

 Legs yellow or yellowish brown, knees and tarsi sometimes a little 

 darker. Fore metatarsus three fourths longer than the tibia; 

 fore tarsi nearly bare; middle and hind legs hairy. Wings 

 hyaline, veins yellow, crossvein brown though not very prominent. 

 Halteres yellow. Chicago, 111., Brookings, S. D., and Ithaca, N. Y. 



58. Chironomus redeuns Walker 



1S56 Chironomus Walker. Ins. Saunders, I. Dipt, p.422 

 1878 Chironomus Ost. Sack. Cat'l. Dipt. N. A. p.21 

 1900 Chironomus Coq. Proc, U. S. Nat. Mus. 22 : 250 



Female. Wings bare. Tawny. Antennae brown, tawny at the 

 base. Thorax with four brown stripes, the outer pair paler, 

 broader and shorter than the inner pair. Abdomen brown, with 

 a hoar}' band on the hind border of each segment; under side 

 tawny. Legs testaceous; tips of the femora, of the tibiae and of 

 the joints of the tarsi brown. Wings limpid; veins brown, 

 strongly defined; discal mark distinct. Halteres testaceous. 

 Length of the body 3 lines (= 6 mm.) ; of the wings 5 lines 

 (=10 mm.). United States. Walker, loc. cit. Puerto Rico and 

 Mississippi (Coquillett, loc. cit.). 



59. Chironomus plumosus Linne 



1758 Tipula. Syst. Nat. ed. X. p.587, 19 

 1761 Tipula. Favma Suec. ed. II. p.434, 1758 

 1767 Tipula. Syst. Nat ed. XII. 2:974, 26 



