J^fr. R. S. Bagnall on new ThysanopUra. 403 



b. P/ii/sopus group. 



Thrips griseus, sp. n. 



? . — Size and general lorm as in T. physopus. 



Dark grey to grey-brown; fore-tibiiu liglit yellow shaded 

 on llieir outer margins with grey-brown ; all tarsi yellowish ; 

 fore-wings entirely grey, hind-wings ligliter. Antennaj giey- 

 brown, joint 3 yellowish and 4 brownish-yellow basally. 

 5 lighter at extreme base. 



Head as in T. phi/sopus, transverse, with cheeks widest 

 behind eyes and thence converging to base. Ocelli rather 

 large. Antennje much as in T. physopus, but with the inter- 

 mediate joints comparatively stouter; relative lengths of 

 joints 3 to 7 approximately as follows : — 20 (with stem) : 

 17 : 12 : 19 : 6. 



Prothorax wider than and at least as long as the head, 1"7 

 times as broad as long ; bristles at hind angles moderately 

 long and stout, 045 the length ot" the prothorax. Legs 

 moderately stout, hind tibice with a double row of six S[)ines 

 to apex within. Seta3 on costa and veins of fore-wings as in 

 2\ physoptuSf dark. 



Bristles at a'pex of abdomen dark, long and strong, twice 

 as long as tlie segments carrying them ; a short and not very 

 strong dorsal pair on segment 9. Posterior margin of 

 tergite 8 with a short frmge, the cilia apparently running 

 in pairs ; segment 10 divided above. 



Sharply distinguished from T. pkysopus by the coloration 

 and form of antennas, and the colour generally. 



Type. Hope Department of Zoology, University Museum, 

 Oxford. 



Ilab. Japan, 2 ? s, Kobe, vi. 15 (/. E. A. Lewis). 



Suborder TuBULIFERA. 



Family Idolothripidae. 



Genus GiGANTOTUiiirs, Zimmermann. 



1900. Gigantothrips, Zimmermann, Bull, de I'lust. Bot. de Buitenzorg, 



No. vii. 

 1908. Piinurothn'ps, Bagnall, Trans. Nat. Hist. Soc. Northumberland 



& Durham, n. s. iii. p. 208. 



Gigantothrips gracilis, Bagnall. 

 Panurothrips gracilis, Bagnall, /. c. p. 203 (1908). 

 This species is clc^ely relately to G igantothrips elegans, 



