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 A HISTORY OF SURREY APIDX (continued) APIDJE (continued) Osmia coerulescens, L. Generally Psithyrus vestalis, Fourc. Generally fulviventris, Panz. / distributed barbutellus, Kirb. / distributed aurulenta, Panz. Godalming (Latter) campestris, Panz. Chobham (Saunders), bicolor, Schk. Reigate (Saunders), Box Godalming (Latter) Hill (Morice) quadricolor. Generally distributed leucomelana, Kirb. Charlwood, Wo- Bombus, Latr. ting, Chobham (Saunders), Weybridge, venustus, Smith, looking (Morice) Ottershaw (Morice) agrorum, Fab. Generally spinulosa, Kirb. Reigate (Saunders), latreillellus, Kirb. / distributed Croydon (Smith) 1 var. distinguendus. Shirley, Norwood Eucera, Scop. (Smith) longicornis, L. Godalming (Latter), hortorum, L. C 11 Chobham. Wokine (Saunders) var. subterraneus. L ., T -11 distributed Anthophora, Latr. var. harnsellus. J retusa, L. Chobham, Waking (Saun- jonellus, Kirb. Waking, Chobham ders), Godalming (Latter) (Saunders), Coombe Wood, Shirley, pilipes, Fab. Generally distributed Purley Downs (Smith) furcata, Panz. Chobham (Saunders), pratorum, L. ~ ^ /- j ; /T. % Generally Godalming (Latter) sylvarum, L. ,. 7 .,. Saropoda, Latr. derhamellus, Kirb. } bimaculata, Panz. Chobham, Waking sorofinsis, Fab. Croydon (Rothney) (Saunders), Wevbridge, Coombe Wood lapidarius, L. ^ ., ,. .. )c u r> j i tj . T f Generally distributed (Smith), Godalming (Latter) terrestris, L. J Psithyrus, Lep. Apis, L. rupestris, Fab. Generally distributed mellifica. Generally distributed CHRYSIDIDjE The Chrysids, or Hymenoptera tubulifera, are insects with brilliant (chiefly metallic) colours, i3-jointed antennas in both sexes, and single- jointed trochanters, which last character they share with the Aculeata. The neuration of their wings, though very ill-developed or rather per- haps obsolescent, also connects them on the whole with that group. The apical segments of their abdomens are thinly membranous, nearly colourless, and so retracted one within another (telescope-fashion) into the body of the insect, that as a rule only the three basal segments are visible. The females are armed with a sting-like ovipositor, but, except in Cleptes, no poison-bag occurs. That genus is believed to be in some way parasitic on Tentbredinidte (according to Lepelletier on Nematus), but scarcely anything is really known on the subject. Other Chrysids infest the cells of various Aculeata, depositing eggs, from which larvae are produced, which devour the aculeate larvae, and appear as imagines in their stead. Ellampus seems to attack in this way chiefly bramble-pierc- ing genera like Pempbredon ; Hedychrum and Hedychridium infest rather the genera that burrow in sand (e.g. Cerceris, Tachysphex and Astatus) ; Chrysis ignita attacks many solitary wasps and bees of various habits ; C. viridula and neglecta are especially attached to Odynerus spinipes, while C. cyanea is to be found almost exclusively about old palings and the like which are riddled with the burrows of Chelostoma, T'rypoxylon, etc. We have but few species of Chrysids in England, perhaps not more than five-and-twenty, and I have myself taken most of these in Surrey. Chrysis birsuta, Gerst, and osmiee, Th., are probably confined to 90