3l0 NEW YORK STATE MUSEUM 



Chironomus sp. B. 



Length 6.5 mm. ; color greenish ; head brown, rectangular, nearly 

 as wide as the first thoracic segment; eyes as in species ''A" de- 

 scribed above; antennae long, about half as long as the head, 

 three-jointed, not counting the basal prominence and the apical 

 processes; the first and third joints about of equal length, the 

 middle one about | as long as the first. Mandible stout, black 

 tipped, tbe teeth very prominent; labium rounded, teeth small, 

 the first laterals shorter than the second (fig.lSB). Fore pro- 

 legs with rather short spines; posterior prolegs not visible and 

 probably destroyed. Caudal papillae and anal blood gills present, 

 but not in sufficiently good condition to describe; ventral blood 

 gills wanting. 



Chironomid sp. C. 



Length 9 mm. Body stout, green in color; head very small, 

 slender and tapering, yellowish; mouth parts resembling those 

 of Ceratopogon; mandibles small, slender, sharp, and apparently 

 move in a nearly vertical plane. On the convex surface of the 

 mandible is a slender spine. The antennae are long and slender, 

 nearly as long as the head, the articulations indistinct, apex with 

 slender processes. Eyes each consisting of a pair of pigment 

 spots situated on the posterior fourth of the head. Margin of 

 the labium apparently straight, toothless, not blackened, bounded 

 on each side by the fan-shaped membrane which is present in 

 Chironomus, the striations particularly distinct. Anterior pro- 

 legs prominent, with comparatively few, long, slender, curved, 

 yellow, but not pectinate claws. These claws are not hair-like 

 as in Chironomus, but more like the claws of the anterior prolegs 

 of Ceratopogon sens. str. Posterior prolegs long and very slender, 

 claws few in number and very small, very much smaller and 

 shorter than those of the fore legs. Dorso-caudal papillae with 

 its setae and the anal blood gills present. The poor condition of 

 the specimens renders further description impossible. 



Bibliography 

 Articles marked with an, asterisk (*) relate to the biology of 

 the species. For a more complete bibliography of the European 

 species (Imagines) see Kertesz's Catalogus Dipterorum I, p. 156 

 to 249. 



1903 Adams, C. F. Kansas Univ. Science Bulletin. 2, No. 2. 



Aristotles. Peri zoon istorias. Lib. V. Cap. 19 St. 100. 



1893 Arribalzaga, F. L. Bol. Acad. Nac. Corcloba, 13. 



*18S0 Asper. Zool. Anzeiger. 130-134; 200-207. 



* Balbiani. Rec. Z. Suisse. 2:527-588. 



