456 MONOGRAPHIA CHALCIDUM. 



4"^ 2°. et 3°. aequalis, acuminatus : mentum elongato-ovatum : 

 labium antice latum, rotundatum : palpi labiales articulo 2°. 

 minuto : thorax brevis : prothoracis scutellum parvum : meso- 

 thoracis scutum magnum ; suturae laterales vix conspicuoe ; 

 epimera et paraptera majuscula ; scutellum ovatum, convexum, 

 mediocre : metathoracis scutellum parvum, canaliculatum : peti- 

 olus brevis : abdomen elongato-ovatum aut fere rotundum ; seg- 

 mentum 2""". maximum ; sequentia parva : pedes graciles ; tibias 

 rectae. 



Sp. 1. Die. aeneus. Fern. Vlridi-cBneus, ante/mis nigro- 



fuscis, pedibus rufis, alls hyalinis. (Alarum longitude, 



1— U lin.) 



August ; grass in fields ; near London. T have sometimes 

 found it wingless. 



Sp. 2. Die. eirculus. Fern. /Eneo-vtridis , antennls nigro- 

 fuscis, jiedihus mfo-fuscis, alls suhfuscis. (Alarum longi- 



tudo, 1 lin.) 



September ; Isle of Wight. 



Sp. 3. Die. fuscieornis. Mas. et Fem. Viridis mas aut 

 csneo-mridis fem., antennis fuscis, jjedibns rufis, fem. 

 femorihus csneis, alts suhfuscis mas aut fuscis fem. 

 (Alarum longitudo, | — 1 lin.) 

 September ; Isle of Wight. 



Sp. 4. Die. tristis. Fem. ALneo-viridis, obscurus, abdo- 

 mine nitido, antennis nigris, pedibus rufis, alis subliyalinis. 

 (Alarum longitudo, 1^ lin.) 

 September ; Isle of Wight. 



Sp. 5. Die. brevicornis. Fem. j^neo-viridis, abdomine 

 viridi, antennis nigris, p)^dibus rufis, alis fuscis. (Alarum 

 longitudo, 1 lin.) 



August ; grass in fields ; near London. 



Genus XI. Pachylarthrus,** Westwood. 



Caput magnum, thorace latius : oculi mediocres : antennae 13-arti- 

 culatae, maris filiformes,/em. subclavatae ; articulus l''^ elongatus, 



>> Since I published the characters of Cyrtogaster, Mr. Westwood has kindly 

 sent to me a description of the male of Cyrtogaster riifipes, under the name of 

 Pacliylariltrus tihidVis. Having dissected the mouth of the female only, I was 



