ON THE SPECIES OF PLATYGASTER. 221 



Fern. — Antennae piceae ; articulus P*. rufus ; 7"^ et sequentes 



nigri : coxae piceae ; mesofemora et mesotibise apice picea ; 



metafemora et metatibise apice nigro-picea ; tarsi apice pallide 



fusci. (Corp. long. lin. | ; alar. lin. 1.) 

 Var. ^. — Fern, antennae articulis 2°. ad 6^'™. rufo-piceis, 7°. ad 10"'". 



nigro-piceis. 

 Var. y. — Fern, antennae articulis 7°- ad 10"™. piceis : pedes pallide 



rufi ; meso- et metapedum coxae omnino, femora et tibiae tarsique 



omnes apice pallide picea. 



Var. c, Fern. Var. y, similis : propedum femora et tibiae apice 



pallide picea. 

 Var. £, Fern. Var. y, similis : mesopedum femora et coxae omnino 



rufa. 



Mr. Haliday has found the female on Cerealia, in England, 

 Ireland, and Scotland ; the male only once on a rose-tree. 

 The former is common on grass in fields near London, in 

 June and July. 



Sp. 3. Plat. Nydia. Fem. P. Tipulae simillimus, alee fiiscce. 



Ater, nitens, laevis, parce et breviter pubescens : caput supra sub- 

 tilissime punctatum, parum nitens : oculi ocellique nigro-picei : 

 antennae rufo-piceae, capite thoraceque longiores ; articulus 1"^. 

 rufus ; 7"^. et sequentes nigri : scutellum apice rufum : meta- 

 thorax abdominisque segmentum 1™\ scabra, obscura, pilis albis 

 utrinque hirta : abdomen segmento 2". ad apicem glabrum, 

 thorace latius, fere rotundum : pedes rufi ; coxae et metatibiae 

 apice nigro-piceae ; femora necnon pro- et mesotibise fusco macu- 

 lata ; tarsi pallidiores, apice fusci ; metafemora apice picea : alae 

 fuscae, ciliatae ; squamulae piceae. (Corp. long. lin. \ — | ; alar, 

 lin. 1—1.) 



Var. /3. — Pro- et mesotibise femoraque immaculata. 



June ; Windsor Forest. — July ; on grass in fields ; near 

 London. 



Sp. 4. Plat. Laodice. Fem. P. Tipulae minor, abdomen 

 longiits, alee angustiores limpiOce. 



Ater, nitens, fere laevis, parce et breviter pubescens : caput subti- 

 lissime punctatum, parum nitens : oculi ocellique nigro-picei : 

 antennae piceae ; articulus V^^. basi pallide rufus ; 7"^- et sequentes 

 nigri : scutellum apice fuscum : metathorax et abdominis seg- 

 mentum 1"™. scabra, obscura, pilosa: abdomen laeve, glabrum; 



