290 MODERN SYSTEM. 



the wings : head distinct from the thorax by an evident interval : 

 proboscis (rarely wanting) univalve : tarsi with two simple nails. 



Besides these characters may be noted some others, which are 

 common to almost all dipterous insects. The 7nout/i is for the most 

 part furnished with a rostrum having no articulations. Thorax com- 

 posed of but one segment, always distinct from the abdomen. 



Fam. I. TiPULiD-'E. Leach. 



TiPULARi.?:. Latreille. 



Antennx With many joints, filiform or setaceous, longer than the head. 



Stirps 1. — Ocelli none: antenna \cxy\\'3Axy. eyes large: ?'os^/-«m tubu- 

 lar and long. 



Genus 489. CULEX of authors. 

 Sp. 1. Cul. pipiens of authors (the common gnat). (PI. 9. Jig. 5.) 

 Inhabits water in the larva state. 

 Stirps 2. — Occ//i none : c///e?iH^ very hairy : ryes large: rostrum very 



short, terminated by two lips : tzco anterior legs at a distance from 



the others. 



Genus 490. CORETIIRA. Meig., Illig., Latr., Leach. 

 Antenna fourteen-Jointed ; the basilar joints conic-ovoid; of the male 



with fasciculi of hairs; with simple hairs on tlie females, the two 



last joints atteniiated, elongated. 

 Sp. 1. Cor. cuculiformis. Meig. 

 Inhabits marshy places. 



Genus 491. TANYPUS. Meig., Wig., Latr., Leach. 

 Antenna fourteen-jointed, very plumose, monilitl)rm, their extremities 



filiform ; of the male, almost entirely moniliform, their last joint 



larger and ovoid in the female. 

 Sp. 1. Tan. cinctus. 

 Inhabits marshy places. 



Genus 49^2. CIIIRONOMUS. Meig., Latr., Wig., Fahr., Leach. 



Antenna twelve-jointed, very plumose, moniliform, with filiform ex- 

 tremities in the male, seven-jointed, the last joint elongate, cylindric 

 in the female. 



Sp. 1. C/tir. p/umosus. Meig. 



Inhabits marshy places. 



Stirps 3. — Ocelli none : antenna very hairy : eyes large : rostrum very 

 short : legs at an equal distance from each other. 



Genus 493. PSYCnODA. Latr., Fair., Leach. Tinearia. SrAc//. 

 Trichoptera. JSIeig. 

 WiHgt deflexed : rostrum shorter than the head . antenna with fifteen 

 or sixteen joints, of a globular form, covered with bundles of hairs. 



