NOTES ON THi: (U:()(;K'APIIICAL DISTRIBUTiON of scale INSECTS. Bv T. D. A. CoCKERELL. In the ])iepavati()n of a list of localities from wliicli Coccidu' have been recorded it becomes so evident tliat our knowledge is not merely incomplete, but fragmentary, tlmt fiutlier consideration of the matter at the present time might seem useless. 1 do not. however, take this view, but prefer to record the fragments of information so far accumu-lated, hoi)ing that those who read these notes may be in some cases stimulated to assist in tilling the gaps. PALEAIJCTIC region. Although Europe has been api)arently well searched, new things are turning up every few months, and I really believe that we do not know the Coccida' ot any European country so well as we do those of New Zealand. There are two or three reasons why the European list, as appearing m the books, must be considerably reduced. One is that there is doubtless a good deal of synonymy not yet clearly made out, ownng to the formerly prevalent idea that it was safe to consider anything on a new food plant to be a new species. Another is the number of imi)er-fect descriptions of older authors, which, in the absence of certainty as to wdiat was intended, w-ill have, eventually, to be dropped. The third reason is that very many species described from Europe have been found m hothouses on exotic plants, and certainly do not belong to the palearitic fauna. When Signoret wrote, these hothouse species already numbered 48, and they have been largely added to since by Douglas and Newstead. Making as good an estimate as I am able to at present, I tind the truly palearctic Coccid;e to be as follows: Forphi/rophora, 5; Guerinia, 1; F((I(Vocoecus, 2: NidnJaria, 1; Anto-nina, 2; Xylococcus, 1; Gos.sy2)((yla, 2; Eriocooeus^ G; Rhisococcus, 1; Bergyothia, 1; Oudahlis, 2-, iJacti/lopius, 11; Ptito, 1; Phenacocc as, 12; Rijjersia, 4; Tetnira,!; Cri/ptocoecu.s, 1; K€rmes,i); Orfhezia, T); Aste-rolecanium, 5; PoUinia, 2; Lecauiodiaspis, 1; SujnoreUa,!; F'dlippia^l; Procee(liu"s of the U. S. National :Miiseum, Vol. XVII— No. 1026. 615
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