. Economic entomology . Mouth of Listrophorus Leuckarti, Copied from Claparede. Leg^ of ditto. Ditto. From the general resemblance of the snout to that of Myo- _ coptes, which we figure below, it is probably formed on the same P plan, although we do not know that it has been actually de- ciphered. Full details of their structure are given by Pagenstecher, (loc. cit.) and especially by Claparede in his Studien an Acareden^ No. x4r Listrophorus gibbus {Fagenst., Zeitschr. fur Wiss. Zool. XI., 156).—14 Magnified sketch of ditto, copied from Pagensteclier's figure.

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