-fr AiMy^uuvJi^^L^ ::iMMSLMJi\J'^^^J 



274 Professor Williston on the 



n . . . /I - \ 2. Gliironomus anonymus, n. sp. 



^. Head red, or reddish-yellow, the front more yellow. 

 Antennae brown, the first joint red ; plumosity at the tip blackish. 

 Mesonotum liglit brownish-red ; two stripes and the humeri 

 yellow ; scutellum light yellow. Pleurae light brownish or reddish- 

 yellow. Metanotum brown. Abdomen blackish, the first segment 

 and the distal part of the next, two or three segments yellow or 

 yellowish. Legs yellow ; the immediate tip of the tibiae and the 

 tip of all the tarsal "joints dark brown ; proximal end of the front 

 tibiae also brown ; front tibiae about one-half of the length of their 

 metatarsi, and not longer than the second joint. Wings nearly 

 hyaline. Length 4-5 mm. )c^f^ AW^WVA i ^i^^^^ l^.^*^UA H 



(3i,yxyec/KVi*-jr\ ^3. CliironomiisfUonjimaniis^Ti. sp. (PI. IX., fig. 33, wing.) 



Gjp'*<>^P'**'^ \^7(^ . Head yellow. Antennae, save the basal joint, black or deep 

 brown, the plumosity greyish-black. Thorax light yellow ; a 

 blackish-brown stripe, running from in front of the root of each 

 wing, and joining in the middle in front, forming a V-sbaped figure; 

 below these stripes the sides of the mesonotum are of a purer 

 yellow ; the metanotum and a spot below the halteres blackish. 

 Abdomen yellow ; a black band on the posterior margin of the 

 first and second segments ; the fourth segment, the posterior, or 

 greater part of the fifth segment, and the hypopygium, black or 

 dark brown. Legs yellow ; the base and tip of the four posterior 

 femora, and the proximal end of their tibiae brown ; front legs 

 much elongate, the metatarsi about one-fourth longer than their 

 tibiae. Wings nearly hyaline. Length 3-4 mm. 



Numerous specimens. 



4. Chironoinus luguhris, n. sp. 



^ . Similar to Gh. long'tinauus, but differs in lacking the brown 

 stripes of the mesonotum, which is uniformly light yellow, in the 

 abdomen being uniformly brown, and in the femora being wholly 

 light yellow. Length 3-4 mm. 



Six specimens. 



5. Chironomus innocuuSf n. sp. 



^ . Head and basal joints of the antennae light yellowish ; palpi 

 brown ; antennae brown. Thorax light yellow ; mesonotum with 

 a broad brown stripe in the middle in front, and, on either side, 

 an oval brown spot, the three separated, aad the middle stripe 



