Mr. E. S. Bagnall on neio Thysanoptera. 393 XXXV 1 1. — Brief Descriptions of neio Thysanoptera. — XII. By Richard S. Bagnall, F.R.S.'E., F.L.S. This is continued from Ann. & Mag. Nat. Hist. ser. 9, vol. vii. pp. 355-3G8, and the following species are de-scribed : — Physothrips minor, sp. n. „ andretcsi, sp. n. 3fe(/athn'ps Jwnoris, sp. n. Baciridothrips serraticornis, sp. u. Elaphvofhri'ps antennalis, sp. n. Dicaiothrips crassicejjs, sp. u. ,, brevtceps, sp. n. Suborder Terebrantia. Physothrips minor, sp. n. $ . — Length about 1"0 min. Belonging to the P. usitatus grriup. Colour diirk biown; tore-tibice pale yellowish^ lightly shaded ■with grey-brown bnsuily, intermediate and bind-tibige at tips and all larsi pale yellow; third antennal joint pale yellow, for the most part shaded with grey. Fore-wing daik grey-brown, excepting basal fifth or thereabouts, where it is light. P. antennatus type. — Eyes coarsely facetted, pilose ; ocelli large, interocellar setae situated between posteiior ocelli, long and stout. Maxillary palpi long and slender. Antennpe as in antennalus, Bagn., but joints 3 and 4 not so strongly produced distally ; 4 longer than any other joint ; 3 ap|)arently short on account of being very broad near middle ; 5 with a very short stem-like constriction ; relative lengths of 3 to 8 approximately 39 (with stem) : 46 : 33 : 41 : 8 : 13. Forked trichomes on 3 and 4 stout. Upper vein with a series of setae running to the distal third and two at tip ; those of posterior vein long, commencing at the second setee of tlie uj)per vein. Abdominal segments 8-10 obconical ; terminal setse long and strong, those on 9 approximately 1*4 times the length of the segment. Eighth tergite posteriorly without fringe. This species comes near to P. antennatus, Bagn., and P. antennalis, Karny, and is distinguished from both Ijy the small size and the relatively shorter joint 4 of the antenute. Type. In Coll. Bagnall.