272 Mr. Walker's descriptions of Chalcidites/rom Valdivia. 



mediocres, non extantes : antennas nigrae, graciles, subfili formes, thorace vix 

 breviores; articulus l 118 longus, sublinearis ; 2" s longicyathiformis, 3 ,,s et 4 uS 

 minimi; 5 us et sequentes usque ad 10 um subaequales, approximati; elava lon- 

 giovata, acuminata, articulo 10° multo longior : thorax longi-subovatus : 

 prothorax transversus, mediocris, antice paullo angustior : mesothoracis scu- 

 tum longitudine latius ; parapsidum suturae bene determinatae, postice ap- 

 proximatae ; paraptera et epimera magna ; scutellum subconicum, mediocre : 

 metathorax magnus, declivis, obconicus : petiolus sat longus : abdomen brevi- 

 ovatum, laeve, glabrum, thorace multo brevius : pedes fiavi, simplices, sub- 

 aequales ; coxae virides ; tarsi apice fusci : alae limpidae ; squamulae fuscae ; 

 nervi fulvi. (Corp. long. lin. 1 ; alar. lin. 1^.) 



Lamprotatus Bisaltes, Mas. Mneo-viridis, antennce nigrce, pedes flavi, 

 femora viridia, alee Umpidce. 



Corpus convexum, aeneo-viride, nitens, scitissime squameum, pai'ce hir- 

 tum : caput transversum, breve, thoracis latitudine ; vertex latus ; frons im- 

 pressa, abrupte declivis : oculi run, mediocres, non extantes : antennae ni- 

 grae ? : thorax ovatus : prothorax transversus, brevissimus : mesothoracis 

 scutum longitudine latius ; parapsidum suturae bene determinatae, postice 

 approximatae ; paraptera et epimera magna ; scutellum conicum, mediocre : 

 metathorax brevi-obconicus, declivis : petiolus brevissimus : abdomen sub- 

 lineare, lseve, glabrum, fere planum, thorace angustius et multo brevius ; seg- 

 mentum l" m maximum : pedes flavi, simplices, subaequales ; coxae virides; 

 femora viridia, apice flava; tarsi apice fusci : alae limpidae; squamulae piceae; 

 nervi fusci ; nervus humeralis ulnari fere duplo longior, radialis ulnari paullo 

 brevior, cubitali paullo longior ; stigma parvum. (Corp. long. lin. 1 ; alar, 

 lin. H.) 



Lamprotatus Orobia, Fern. Viridis, cupreo-varius, antennce nigrce, pedes 

 rufi, femora basi viridia, alee Umpidce. 



Viridis, convexus, nitens, scitissime squameus, parce pubescens : caput 

 transversum, mediocre, thoracis latitudine ; vertex sat latus ; frons abrupte 

 declivis, ad antennarum receptionem excavata : oculi picei, mediocres, non 

 extantes : antennae subfiliformes, nigrae, graciles, pubescentes, thorace non 

 longiores ; articulus 1 UB longus, gracilis; 2 lls longicyathiformis ; 3 us et4 u8 vix 

 conspicui; 5 US longicyathiformis ; 6 US et sequentes breviores : thorax longi- 

 ovatus : prothorax mediocris, transversus, antice angulum utrinque fingens 

 non angustior : mesothoracis scutum longitudine vix latius ; parapsidum su- 

 turae bene determinatae, postice approximatae ; paraptera et epimera magna ; 

 scutellum mediocre, conicum : metathorax mediocris, declivis, obconicus : 

 petiolus brevis : abdomen ovatum, nitens, laeve, fere glabrum, apice acumi- 

 natum, thorace paullo brevius : segmenta antica magna, postica breviora : 

 oviductus non exertus : pedes graciles, recti, subaequales, pallide rufi, pubes- 

 centes : coxae virides; trochanteres piceae; femora basi viridia; tarsi apice 

 fusci : alae limpidae, mediocres; squamulae viridi-piceae ; nervi fusci ; nervus 

 humeralis ulnari fere duplo longior, cubitalis radiali brevior; stigma minu- 

 tum. (Corp. long. lin. 1^; alar. lin. 2-^.) 



Var. /3. — Capitis vertex viridi-aeneus : thoracis discus cupreo-aeneus : ab- 

 domen cupreo-varium. 



Pteromalus Megareus, Fern. Viridi-cenens, antennce nigrce, pedes flavi, 

 femora viridia, tibice fusco-cinctce, alee Umpidce. 



Corpus viridi-aeneum, convexum, parum nitens, scitissime squameum, 

 parce pubescens : caput transversum, breve, thorace paullo latius ; vertex sat 

 latus ; frons abrupte declivis, excavata : oculi picei, mediocres, non extantes: 

 antennae nigrae, subclavata?, pubescentes, sat graciles, thorace non longiores; 



