OBSERVATIONS ON PIPUNCULIDjE. 269 



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

 | June ; Windsor forest ; New Forest. 



** Nervus 4 US . lonc/ititdinalis ramulum brevem emitlens. 



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

 fern ; griseo maculatus, pedibus nigris fusco cingulatis, 

 alis hyalinis. 



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

 Pipunculus auctus. Meigen, Dipt. Furop. IV. 23. 10. 



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

 ocellique run : antennae nigra? ; articulus 3 US . argenteo micans : 

 scutellum prominens : abdomen planum, apice angustius, subtus 

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

 grisei, pilosi ; genua flava ; tibia? nigro-fusca?, apice basique 

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

 fusci : ala? hyalinse ; squamulae nigro-fuscae ; nervi-nigri, basi 

 fusci ; squamse et halteres fusca. 



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

 utrinque et apice abdominisque segmenta apice grisea : oviductus 

 niger, nitidus, apice rufus : squamulse fusca? : squama? et halteres 

 rufa. (Corp. long. 1| — If lin. ; alar. 2| — 3 lin.) 



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

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



Genus II. — Chalarus.* Walker. 



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

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

 mediocres : alarum nervus longitudinalis 3 US . fere rectus ; 4 US . apice, 

 nervulus transversus ordinarius nervusque basalis incompletus 

 omnino obsoleti. 



Sp. 1. Cha. spurius. Mas et Fern. Ater, obscurus, pedibus 

 nigris, alis fuscis. 



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

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



Mas. — Ater, holosericeus, obscurus, pilosus : oculi ocellique run' : 



antenna? nigra? : thorax antice utrinque nigro-fuscus : scutellum 



prominens, metathoracem obtegens : abdomen depressum, apice 



angustius ; segmenta suba?qualia : pedes atri, pilosi ; tarsi subtus 



* XaAnpos, languidus. 



