274 Professor Williston o)i tJie 



2. Gliironomus anonymus, n. sp. 

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

 Antenna} brown, the first joint red ; plnmosity at the tip blackish. 

 Mesonotum light brownish-red ; two stripes and the humeri 

 yellow ; seutellum light yellow. Pleuntj 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. 



3. CJdronomus lonyimcmus, n. sp. (PI. IX. ^ fig. 33, wiug.) 



(^ . 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-shaped 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 tibias brown ; front legs 

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

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



Numerous specimens. 



4. Chironomns higuhris, n. sp. 

 ^ . Similar to CJ>. lo»f/linaiii(s, 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. Chironomns innocuus, n. sp. 



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



brown ; antenn;e 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 



