ON THE SPECIES OF PLATYGASTER. 227 



punctata, parum nitida, utrinque pubescentia ; segmenta 2"™. 

 et sequentia glabra : pedes rufi ; coxae, metafemora, metatibiae 

 tarsique apice picea : alse subfuscas ; squamulse rufo - piceae. 

 (Corp. long. lin. 1 ; alar. lin. Ig.) 



September ; on grass in fields ; near London. 



Sp. 13. Plat. Mamertes. Mas. Prcdcedenti similUmus, an- 

 tenncs breviores, ala albo-limpidce, 



Mas. — Ater, nitens, Isevis, fere glaber : caput thorace latius : oculi 

 nigro-picei : antenna; nigrte, corpore breviores ; articulus 1"^. 

 basi piceus : abdomen cochleatum, thorace longius et latius : 

 pedes nigri ; tibiae basi piceae ; protibiae subtus apice tarsique 

 flava, hi apice picei : alae albo-limpidae, postice ciliatse ; squamulae 

 nigro-picese. (Corp. long. lin. | ; alar. lin. 1.) 



Found in September, on willows, in Kent ; and at Holy- 

 wood, in Ireland, by Mr. Haliday. 



Fem.1 — Caput thorace vix latius : antennae clavatae, corporis dimidii 

 longitudine ; articulus \^^. subfusiformis ; 2"^. longi-cyathiformis ; 

 sequentes parvi, 3"^ et 4"^. lineares, 5"^. et 6^^. rotundi ; 7"^ et 

 sequentes lati : thorax ovatus, convexus : abdomen obclavatum, 

 thorace fere duplo longius ; segmentum 1^™. et metathorax pilis 

 albis utrinque hirta ; 2^'". ovatum, postice angustius ; sequentia 

 obscura, quasi telum fingentia; 3"™. mediocre; 4^™. multo lon- 

 gius ; 5"™. adhuc longius ; 6""^. 3*. longitudine : trochanteres et 

 tibiae piceae, hae basi flavae; protibiae flavse, apice supra fusco 

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



Found in September, on willows, at Holywood, in Ireland, 

 by Mr. Haliday. 



8. Fern. — Corpus crassum, breve : antennae capitatae ; articulus 2"^. 

 cyathiformis ; 3^^. et 4"^. parvi, angusti, lineares ; 5"^. et 6"^ 

 cyathiformes, breviores, non latiores ; 7"^. et sequentes multo 

 latiores, subaequales ; 1 0"^ 9°. paullo longior : thorax brevi- 

 ovatus : mesothoracis parapsides scuto in unum confusae ; scutel- 

 lum abdomen attingens : metathorax et abdominis segmentum 

 l"°i. brevissima : abdomen piriforme, arcuatum, vix acuminatum, 

 thorace paullo longius ; segmentum 2"™. ejus dimidium occupans, 

 ovatum, latum ; sequentia abrupte angustiora ; 3"™. et 4"™. 

 brevia ; 5"™. et 6""\ paullo longiora ; segmentum 2"'". ventrale 

 subtus valde dilatatum. 



