160 OBSERVATIONS ON THE 



C megaplera inhabits round berry-like galls on the trunks of 

 trees ; C. rosce forms the mossy galls met with on rose-bushes ; 

 and the oak-apples are produced by a fourth species. 



I am indebted to Mr. Haliday for much valuable information 

 of the structure and economy of these insects, of which there 

 are more than one hundred British species. 



I. — (Anacharis, Dalman,) Ent. Mag. Vol. IT. p. 518. 



II. — (^gilips, Haliday.) Corpus mediocre, compactum, con- 

 vexum, atrum, laeve, nitens, parce at breviter hirtum : caput 

 transversum, subquadratum, thorace paullo latins, laevissimura, , 

 nitidissimum : mandibulae mediocres, quadratae, subarcuatse, den 

 tibis magnis acutis 3 armatse : maxillae longae, graciles, subar 

 cuatae ; lacinia? acuminatse, intus lobatae ; palpi 4 - artirulati, , 

 graciles, longitudine mediocri ; articuli 1"^ et 2"^ mediocres I 

 lineares subaequales, 3"^ longicyathiformis intus apice angulatua ( 

 2". paullo brevior, 4^^ fusiformis fere linearis 3°. longior et : 

 gracilior : labium longum, angustum, lanceolatum ; palpiger : 

 furcatus ; ligula brevis, lata, ciliata ; palpi 3-articulati, breves, , 

 clavati; articuli 1"^ et2"^ graciles, lineares, hie brevissimus ; 3*^*. 

 angusti-ovatus, 1". longior et crassior : antennae articulis mari 14, 

 fern. 13, filiformes, corpore paullo longiores, breviter pubescentes; 

 articuli P^. et 2"^. nitidi, hie subrotundus parvus, ille fusiformis 

 validus ; sequentes ad postremo proximum subfiliformes, basi et 

 apice paullo angustiores, longitudine gradatim decrescentes ; 

 ultimus acuminatus, praecedente longior et gracilior : thorax 

 ovatus, altus, postice angustior, supra transverse scitissime unda- 

 tus : prothorax supra brevissimus vix conspicuus : mesothorax i 

 maximus ; parapsidum suturae bene determinatae, punctataa, 

 postice mutuo accedentes ; paraptera et epimera conspicua ; scu- 

 tellum extans, plus minusve exsculptum, parum nitens, apice : 

 abrupte declive, dum supra conspicitur ovatum, turn a latere i 

 angulum subacutum fingens : metathorax mediocris, scaber, 

 obscurus, declivis : petiolus brevis, gracilis, teres, glaber, parum 

 nitens, scite impressus et sulcatus, metathorace infimo insertus: 

 abdomen ovatum, glabrum, thorace angustius et plerunque paullo . 

 brevius, non compressum nee acuminatum ; segmenta 6 trans- 

 versa recta supra conspicua, basale maximum, sequentia ad apicale 

 gradatim decrescentia ; segmenta ventralia laming angusta oc- 

 culta ; oviductus minutus, reconditus : pedes graciles, simplices, 

 recti, brevissime pubescentes ; tibiae apice bispinosae ; protibiae i 

 spina unica longa valida curva armatae ; tarsi articulis P. ad 4"' 

 longitudine decrescentibus, 5"^. 4°. longior ; ungues et pulvilli I 



