PIPUNCULUS. 231 



very minute. Proboscis short, scarcely projecting ; the labella pouting, 

 the labrum and tongue very short ; the palpi slender, erect ; maxillae 

 none. Thorax subglobose ; no suture of the mesonotum before the 

 wings; sides of the prothorax with defined callosities. Wings long; 

 the costal vein not continued round the hind margin ; mediastinal dis- 

 tinct ; cubital simple ; praebrachial outwardly bent towards the cubital, 

 and ending close to it, so that the subapical areolet tapers almost to a 

 point ; brachial areolets both complete, the posterior reaching to about 

 the third of the wing's length, the anterior longer ; anal areolet tapering 

 to a point close to the hind margin. (In some the prsebrachial and 

 anal veins are imperfect, and the subapical, discal, and anal areolets 

 consequently undefined.) Axillary lobe rounded; alulae inconspicuous. 

 Abdomen cylindrical or depressed, of six segments, besides the hypopy- 

 gium, which in the female forms an incurved pointed horny ovipositor. 

 Legs rather short ; fore pair but little removed, their coxae reaching to 

 the intermediate pair ; tibiae without terminal spines ; tarsi with the 

 first joint longest ; onychia large ; empodium setaceous, recurved. 



a. Wings with a discal areolet. Genus 1. PIPIJNCULUS. 

 a a. Wings without a discal areolet. Genus 2. CHALAKUS. 



Genus I. PIPUNCULUS. 



PIPUNCULUS, LI. h. n. xiv. (1810); Mg. ; St. F. et Sw. ; Hal.; Mq. 

 Cephalops, Fin. Microcera, Mg. 



Alee vena cubitali undulata, prcebracniali et anali integris j areolis 



subapicali et anali apice attenuatis. 



Head semicircular, large ; epistoma small, linear ; peristoma narrow. 

 Proboscis short, concealed. Labrum horny, triangular, very short. 

 Lingua horny, pointed, extremely small. Palpi clavate, somewhat 

 curved, bare, with 2 little bristles at the tip, as long as the labium. 

 Labium short, thick, fleshy, cylindrical. Antennae approximate, small, 

 5 -jointed ; first joint extremely small ; second short, cy at hiform ; third 

 deflexed, compressed, generally pointed ; fourth seated on the base of 

 the third ; fifth setiform. Thorax oval ; scutellum semicircular. Wings 

 long, pubescent, incumbent and parallel in repose ; cubital vein undu- 

 lated ; prabracJiial and anal veins complete ; alulae very small. Halteres 

 uncovered. Male. Eyes contiguous. Tip of the abdomen obtuse. 

 Fern. Eyes parted. Tip of the abdomen horny, pointed, curved 

 beneath. 



The Pipunculi inhabit woods and fields, and often hover in 

 the air. The species may be thus grouped : 



a. Praebrachial vein simple. 

 b. Abdomen cylindrical. 



c. Wings without a stigma. Species 1-3. . 

 c c. Wings with a stigma. Species 4-6. 



