224 NEW YORK STATE MUSEUM 



' Female. Stethidium green trilineate ; a black line on the middle 

 of the anterior line. Body bright pea-green ; head yellowish, ter- 

 minal joint of the antennae blackish; thorax with three dilated, 

 pale honey yellow vittae; a black line along the middle of the 

 anterior one ; wings white ; meta thorax pale honey yellow ; with a 

 blackish spot in the middle, divided by a green line; tergum im- 

 maculate; pectus pale honey yellow; feet pale greenish, anterior 

 tibiae and tarsal incisures dusky. Length more than one fifth 

 inch (=5mm.). Indiana. Say, loc. cit. 



40. Chironomus fulvus n. sp. 



Larvae collected in Beebe lake near the shore in August ; reddish 

 yellow in color. Length about 5 mm. Thei empty larval skin was 

 subsequently lost, hence no further description can be given. 



Pupa. A single pupa from which emerged a specimen so greatly 

 resembling the species described below that I believe them to be 

 identical. This pupa had very much elongated respiratory or- 

 gans ; nearly as long as the body, the main trunk flattened, slender, 

 diminishing in diameter toward the end, the apical end subdivid- 

 ing into three or four branches. Each abdominal segment with a 

 transverse row of rather conspicuous spines near the posterior 

 margin, and a number of long setae, three or four pairs of which 

 are laterals, one or two pairs discal, and a marginal pair, all as 

 shown on pl.22, fig.20. The lateral fin of the eighth segment is 

 provided with a somewhat sinuous yellow spur a little caudad of 

 the middle. The caudal fin is fringed with the usual flattened 

 matted filaments, those more caudad being longer and broader 

 than the others (pl.22, fig.23). 



Imago. (P1.28, fig.l9). Deep yellow; wings hyaline, yellow 

 tinted. Length 3 to 4 mm. 



Female. Head yellowish^ occiput dusky, palpi, antennae and 

 proboscis subfuscous ; the base of the second joint and sometimes 

 the basal joint and some of the intermediate joints of the antenna 

 yellowish. Dorsum of the thorax pale yellow, with a whitish 

 sheen, with three testaceous stripes, the middle one divided by 

 a fine line. Humeri whitish, scutellum and part of the pleura 

 yellow, the remaining parts of the thorax reddish yellow. Abdo- 

 men reddish yellow, the more posterior segments brownish, the 

 posterior margins of the segments a very little, if any, paler; 

 hairs yellow. Coxae and legs yellow, the fore legs excepting the 

 middle section of the femora, and the whole of the middle and 

 hind tarsi excepting the basal half of the metatarsi, fuscous. Tips 

 of middle and hind tibiae with minute black comb. Wings 

 hyaline, with a slight yellow or dusky tint; anterior veins includ- 

 ing the crossvein yellow ; venation as figured. Halteres pale yel- 



