ON THE SPECIES OF PLATYGASTER. 243 



** Scutellum tuherculo simile, non productum. 

 "j" Fern, abdominis segmenta postica attenuata. 



18. Fern. — Antennae extrorsum crassiores, corporis dimidio breviores ; 

 articulus 2^^. cyathiformis ; 3"^. minimus ; 4"^. et sequentes 

 mediocres, breves, sequales ; 10^^. paullo longior, conoides, 9°. 

 approximatus : thorax ovatus : mesothoracis parapsidum suturae 

 conspicuae ; scutellum minime convexum : metathorax brevissi- 

 mus : abdomen teliforme, thorace duplicato multo longius ; seg- 

 menta 1°. ad S*^"*. sequentibus paullo breviora ; P™. bene 

 determinatum ; 2""*. et 3"™. ovatum fingentia, hoc 1'. longitudine, 

 ilium thorace paullo brevius ; 4.^^. basi paullo latius, 3°. fere 

 duplo longius ; 5"™. lineare, 4°. multo longius ; 6"™. acuminatum, 

 4". longitudine. 



Sp. 44. Plat, ensifer. Fern. Ater, pedes rtifo-fusci, alaalbce. 



Epiraeces ensifer . . Westwood, Loudon s Mag. Nat. Hist. 



VI. ^2i.^g. g.a 



Ater, nitens, laevis, fere glaber : caput subtilissime punctatum : 

 oculi ocellique nigro-picei : antennae nigrae ; articuli 1"^. basi 

 2*^^. que apice fusci : abdomen scitissime sulcatum ; segmentum 

 1"^™. scabrum, obscurum : pedes obscure picei ; coxae nigrae ; 

 trochanteres rufo-picei ; tibiae piceae, apice basique rufae ; pro- 

 tibiae rufae, piceo cingulatse ; tarsi rufi, apice picei : alae albo- 

 limpidae ; squamulse obscure piceae. (Corp. long. lin. l^ — 1^ ; 

 alar. lin. 1 — 1|.) 



Far. /3. — Femora basi rufo-picea ; protibiae piceae, basi apice et 

 subtus rufae. 



July ; on grass in fields ; near London. Found in Ireland, 

 by Mr. Haliday. 



19. Fem. — Antennae subclavatae, capitis thoracisque longitudine ; 

 articulus 2"^. cyathiformis ; 3*^^ minimus ; 4"^. 3°. approximatus ; 

 sequentes 5°. ad 9"™. gradatim latescentes ; 10"^. brevi-ovatus, 

 9°. paullo longior et latior : thorax brevi-ovatus : mesothoracis 

 parapsidum suturae conspicuas ; scutellum maxime convexum : 

 metathorax brevissimus : abdomen teliforme, thorace triple longius ; 

 segmenta 1°. ad 3"™. sequentibus paullo longiora ; 1""". brevissi- 

 mum ; 2*^™. fusiforme, thorace paullo longius ; 3*^™. 2'. dimidio 



* Many natural genera are probably comprised in Platygaster, but the genus 

 Epimeces, referred to above, is founded on error ; sexual characters are there 

 regarded as sectional, and vice versa. The observation on Plat, ruficmnis is also 

 erroneous. 



