OBSERVATIONS ON PIPUNCULID.^. 269 



May to July ; on grass beneath trees ; near London. 

 June ; Windsor forest ; New Forest. 



** Nervus 4"^ longitudinalis ramulum brevem eniittens. 



Sp. 9. Pip. auctus. Mas et Fern. Ater, mas; aid fuscus, 

 fem ; griseo maculatus, jjedibus nigris fusco cingulatis, 

 alls hyalinis. 



Cephalops auctus . Fallen, Dipt. Suec. Syrph. 61. 1. 2. 

 Pipunculus auctus. 3Ieigen, Dipt. Europ. IV. 23. 10. 



Mas. — Ater, obscurus, pilosus : caput argenteo micans : oculi 

 ocellique rufi : antennae nigrae ; articulus 3"^. argenteo micans : 

 scutellura prominens : abdomen planum, apice angustius, subtus 

 nigro-griseum ; segmenta apice utrinque grisea : pedes iiigro- 

 grisei, pilosi ; genua flava ; tibiae nigro-fuscse, apice basique 

 fuscae ; tarsi fusci, subtus fulvi ; ungues et pulvilli albi, illi apice 

 fusci : alae hyalinae ; squamulje nigro-fuscae ; nervi-nigri, basi 

 fusci ; squamse et halteres fusca. 



Fem. — Fuscus, pilosus : abdomen apice paullo angustius : thorax 

 utrinque et apice abdominisque segmenta apice grisea : oviductus 

 niger, nitidus, apice rufus : squamulae fuscae : squamag et halteres 

 rufa. (Corp. long. l\ — If lin. ; alar, 2| — 3 lin.) 



July ; on grass beneath trees ; near London. May ; 

 Birchwood, Kent. June ; Windsor. New Lanark, Scotland. 



Genus IL — Chalarus.* Walker. 



Maris oculi supra non connecti : antennarum articulus 3"^. ovatus, 

 2°. non multo longior : maris et fem. ungues et pulvilli similes, 

 mediocres : alarum nervus longitudinalis 3^^. fere rectus ; 4"**. apice, 

 nervulus transversus ordinarius nervusque basaUs incompletus 

 omnino obsoleti. 



Sp. 1. Cha. spurius. Mas et Fem. Ater, obscurus, jiedibus 

 nigris, alisfuscis. 



Cephalops spurius . Fallen, Dipt. Suec. Syrph. 16. 3. 

 Pipunculus spurius. Meigen, Dipt. Europ. IV. 24. 11. 



Mas. — Ater, holosericeus, obscurus, pilosus : oculi ocellique rufi : 

 antennae nigrae : thorax antice utrinque nigro-fuscus : scutellum 

 prominens, metathoracem obtegens : abdomen depressum, apice 

 angustius ; segmenta subaequalia : pedes atri, pilosi ; tarsi subtus 



* XaAfipbs, languidus. 



