46 Mr. Walker^s Descriptions of Chalcidites. 



Micromelus Silanus, Fern. Mneo-niger, cyaneo-varius, antennae fulvce, 

 pedes fulvi, alee f usees. 



Corpus seneo-nigrum, subtus cyaneo-nigriim, breve, latum, couvexum, 

 parum uitens, scitissime squameum, parce hirtum : caput transversuin, breve, 

 thorace latius ; vertex latus ; frons impressa, abrupte declivis : oculi picei, 

 mediocres, non extantes : ocelli vertice triangulum fingentes ; medius per- 

 parum antepositus : antennae fulvse, ad os insertae, basi graciles lineares : 

 OS piceum : tborax ovatus : prothorax brevissimus : mesothoracis scutum 

 longitudine latius ; parapsides scuto fere in unum confusse ; paraptera et epi- 

 mera magna ; scutellum subrhombiforme, postice latius : metatborax brevis, 

 declivis, postice angustus : petiolus brevissimus : abdomen subrotundum, 

 seneum, nitens, laeve, supra planum, subtus carinatum, tborace paullo latius 

 et multo brevius: pedes fulvi, simplices, subaequales: alae fuscoe, mediocres; 

 squamulse picese ; nervi fusci ; nervus liumeralis ulnari duplo longior, ra- 

 dialis ulnari brevior cubitali vix longior, cubitalis sat longus ; stigma me- 

 diocre. (Corp. long. lin. -1; alar. lin. 1^.) 



Mount Wellington. 



VIII. — Descriptions of Chalcidites discovered in St. Vincenfs Isle 

 by the Rev. Lansdown Guilding. By Francis Walker, Esq., 

 F.L.S. 



Decatoma Oretilia, Mas et Fem. Fuho-Jlava ferriigineo-varia, antefince 

 fulvcBy pedes Jlavi, alee limpidee. 



Corpus convexum, sublineare,fulvo-flavum, nitens, subtilissime punctatum, 

 parce birtum : caput transversum, breve, tborace paullo latins ; vertex latus ; 

 frons impressa, abrupte declivis : oculi ruii, mediocres, non extantes : an- 

 tennas fulvse, clavatae, thorace non longiores ; articulus 1"* longus, gracilis; 

 2"* cyatbiformis ; 3"*et 4"* minimi; 5"^et sequentes breves, usque ad 9"*" 

 latescentes ; clava fusiformis, acuminata, articulo 9° multo latior et plus 

 duplo longior : thorax ovatus : protborax maximus, transversus, subquadratus, 

 postice ferrugineo-maculatus : mesothoracis scutum brevissimum ; parapsi- 

 dum suturse vix conspicuae ; scutellum subrotundum ; discus ferrugineus : 

 metatborax transversus, brevis : petiolus brevis : abdomen ovatum, laeve, 

 7«ari thoracis longitudine, /ew. thorace paullo longius subtus carinatum apice 

 acuminatum fuscum ; vitta per dorsum interrupta fusca : pedes pallide flavi, 

 simplices, subaequales: alse limpidae; squamulee fulvse ; nervi fulvi; nervus 

 humeralis ulnari fere duplo longior, radialis ulnari non brevior cubitali plus 

 duplo longior; stigma minutum. (Corp, long. lin. 1 ; alar. lin. 1^-) 



Pteromalus Helice, Fem. ^neo-viridis, antennce fulvos^ pedes Jlavi, ales 

 limpides. 



Corpus convexum, seneo-viride, nitens, scitissime squameum, parce hirtum : 

 caput transversum, breve, thorace latius ; vertex latus ; frons impressa, 

 abrupte declivis : oculi rufi, mediocres, non extantes : antennae fulvse, extror- 

 sum crassiores, thorace vix longiores; articulus l"Mongus, gracilis; 2"* cya- 

 thiformis ; 3"*et 4"^ minimi ; 5"* et sequentes breves, usque ad 10""" lates- 

 centes ; clava longiconica, acuminata, articulo 10° duplo longior : thorax 

 ovatus : prothorax transversus, brevissimus : mesothoracis scutum longitu- 

 dine latius ; parapsidum suturae vix conspicuEe ; scutellum subconicum, an- 

 tice truncatum : metatborax obconicus, mediocris, declivis : petiolus brevis- 

 simus : abdomen fusiforme, Iseve, siq>ra depressum, subtus carinatum, apice 

 acuminatum, thorace longius et angustius : pedes laste flavi, simplices, sub- 

 eequales : alse limpidse ; squamulae fulvse ; nervi flavi ; nervus humeralis 



