471 



Say's description of festivus gives the length of the female as 7/20 

 of an inch (9 mm.), but the description is obviously that of a male, 

 since no female has the fore tarsi hairy. With regard to locality he 

 merely says : "Observed particularly in Illinois." Lineatus was de- 

 scribed from Pennsylvania. The female has been recorded under the 

 name lineola as occurring in New Jersey. Mr. Hart captured a large 

 number of specimens, mostly females, at Berrien Springs, Mich., and 

 one female, at light, at Niles, Mich., July 13 and 16, 1914. 



Early stages undescribed. 



49. Chironomus dorneri, n. sp. 



Female. — Yellow, glossy. Head brownish yellow; antennae yel- 

 low; apical joint fuscous; palpi yellow. Mesonotum with the vittse 

 reddish, a large wedge-shaped mark on median vitta, the sharp extrem- 

 ity of which is directed caudad, and the outer half of each of the lat- 

 eral vittae black. Abdomen with basal segment brownish, the re- 

 mainder missing in type. Legs bright reddish yellow, apices of fore 

 femora, fore tibise except an indistinct patch beyond middle, fore tarsi 

 from middle of basal joint, knee-joints of mid and hind legs, and apical 

 two tarsal joints of these legs blackish brown. Wings clear, veins yel- 

 low, cross vein darkened. Halteres yellow. 



Frontal tubercles absent ; antennae with rather long hairs ; palpi 

 longer than antennae. Pronotum very narrow, linear on upper half. 

 Legs long and slender; basal joint of fore tarsi about two thirds 

 longer than fore tibiae (102:60), the next three joints subequal in 

 length (40) ; apical comb of posterior tibiae produced in center in the 

 form of a spur. Third vein ending as far in front of apex of wing as 

 fourth ends behind it ; cubitus forking slightly beyond cross vein. 



Length, 5 mm. 



Type locality, Brownsville, Texas (G. Dorner). 



Named in honor of the collector. 



Early stages unknown. 



50. Chironomus illinoensis, n. sp. 



Male. — Yellowish green. Head yellow ; antennae fuscous with the 

 exception of the scape and basal joint of flagellum, the plumes fuscous ; 

 palpi yellow. Mesonotum shining, the vittae brown, the lateral pair 

 generally distinctly darker than the median one; pleurae with a brown 

 longitudinal median stripe ; scutellum yellow ; postnotum brown, yel- 

 lowish at base. Abdomen more distinctly green than thorax, generally 



