Mr. "Walker's descriptions of Chalcidites from Coquimbo. 185 



Closterocerus Pelor, Mas. Viridis, abdomen purpureum, antenna; ni- 

 gra;, pedes fluvo-fulvi, femora nigra, alee sublimpida?. 



Corpus angustum, sublineare, convexum, viride, nitens, scitissime squa- 

 meum, parcc hirtum : caput transversum, brevissimum, impressum, thorace 

 paullo latius ; vertex latus ; frons abrupte declivis : oculi picei, mediocres, 

 non extantes : antennae nigra?, s ub fi I i formes, hirtae, graciles, thorace non 

 longiores ; clava fusiformis, acuminata, articulo praecedente plus duplo lon- 

 gior : thorax ovatus : prothorax brevissimus, supra vix conspicuus : meso- 

 thoracis scutum longitudine latius ; parapsidum suturae bene determinatae, 

 }>ostice approximate; scutellum subconicum : metathorax mediocris, decli- 

 vis, obeonious : peliolus brevissimus : abdomen sublineare, depressum, laeve, 

 purpureum, basi viride, thorace paullo brevius et angustius : pedes fulvi, 

 graciles, subaequales ; coxae nigrae ; femora nigra, apice fulva ; tarsi flavi, 

 apice fusci : alae sublimpidse ; squamulae piceae ; nervi fulvi ; nervus ulnaris 

 humerali duplo longior, radialis vix ullus, cubitalis brevissimus in alae dis- 

 cum abrupte declivis; stigma minutum. (Corp. long. lin. -£-; alar. lin. ].) 



XXXI. — Descriptions of Chalcidites discovered in Coquimbo 

 by C. Darwin, Esq. By Francis Walker, Esq., F.L.S. 



Lamprotatus Tubero, Fern. Ater, abdomen nigro-purpureum, antenna; 

 fusca, pedes fulvi, femora picea, ala; limpida. 



Corpus breve, robustum, convexum, atrum, nitens, scitissime squameum, 

 parce hirtum : caput transversum, breve, thorace latius ; vertex latus ; frons 

 impressa, abrupte declivis : oculi picei, mediocres, non extantes : antennae 

 fuscse, extrorsum crassiores, thorace non longiores; articulus l us niger, 

 longus, gracilis ; 2 US piceus, longicyathiformis ; 3 US et 4 US minimi ; 5 Us et 

 sequentes usque ad 10 um breves, approximati; clava conica, acuminata, ar- 

 ticulo 10° duplo longior : thorax ovatus : prothorax transversus, mediocris, 

 antice angustus : mesothoracis scutum longitudine multo latius ; parapsidum 

 suturae sat bene determinatae ; scutellum subconicum ; paraptera et epimera 

 magna : metathorax magnus, obconicus, declivis : petiolus sat longus : ab- 

 domen subrhombiforme, laeve, nigro-purpureum, supra planum, subtus ca- 

 rinatum, thoracis dimidio vix longius : pedes fulvi, simplices, subaequales ; 

 coxae nigrae ; femora picea, apice basique fulva ; tarsi apice fusci : alas lim- 

 pidae ; squamulae piceae ; nervi fulvi ; nervus humeralis ulnari multo lon- 

 gior, radialis ulnari vix brevior, cubitali multo longior ; stigma minutum. 

 (Corp. long. lin. 1^; alar. lin. 2£.) 



Far. /3. Antennis articulus l" s viridis : abdomen aeneum : femora nigra; 

 tibiae piceae. 



Lamprotatus? Naevolus, Mas? Viridis, antenna picea;, pedes piceo- 

 virides, tarsi flavi, ala; limpidce. 



Corpus angustum, convexum, viride, nitens, scitissime squameum, parce 

 hirtum : caput transversum, breve, thorace latius ; vertex latus ; frons im- 

 pressa, abrupte declivis : antennae subfiliformes, graciles, piceae, thorace 

 paullo longiores; articulus l us longus, linearis, nigro- viridis; 2 US longicya- 

 thiformis; 3" 8 et 4 US minimi; 5 US et sequentes usque ad ]0 um breves, ap- 

 proximati; clava longiconica, acuminata, articulo 10° plus duplo longior : 

 thorax ovatus : prothorax transversus, mediocris, antice angustus : meso- 

 thoracis scutum longitudine latius; parapsidum suturae bene determinatae, 

 postice approximate ; scutellum subconicum : metathorax mediocris, obco- 

 nicus, declivis : abdomen ademptum : pedes virides, graciles, subaequales ; 

 trochanters picei ; genua flava ; tibiae piceo-virides ; tarsi fiavi, apice fusci : 

 alae limpidae ; squamulae piceae ; nervi fusci ; nervus humeralis ulnari multo 



