Mr. R. S. Bagnall on new Tliysanoptera. 411 



Ilah. Spain, Zara^osa ; 2 ?3 collected (with other inter- 

 esting Thysatinptera) by the well-known neuropterist, Father 

 Navas, IS.J., 6. iv. IW. 



Rhopahthrips froggatti, sp. n. 



cJ . — Length about 0'75 nitn. 



Apterous ; short and broad. 



Uniform brown, distal third of fore-tibife and extreme 

 apices of intermediate and hind tibiaj yellowish-white ; tarsi 

 yellowish marked with Ijrown ; apex of antennal joint 2 and 

 wiiole of 3 yellowish, -l and 5 a trifle lighter biown than 

 6 to «. 



Head much as in R. bicolor, Hood, but with the outline of 

 eyes merged in the checks ; scarcely wider at base (where it 

 is widest) than long; ocelli absent; postocular bristles short, 

 broad apically, apj)arently infundibuliform. Antennai short 

 and stouf, about 1'7 times as long as the head, shaped as in 

 R. bicolor, but joint 6 distinctly constricted at base forming 

 a short stem. 



Prothorax transverse, 0*6 as long as the head, and 2*8 

 times as broad as long ; all usual setae apparently present, 

 colourless, short, and infundibuliform. Pterotliorax short, 

 transverse, only slightly broader than the prothorax. Legs 

 short and stout ; forc-tarsal tooth strong, sharp. 



Abdomen short and broad, narrowing evenly from segment 4 

 to tube; segments — especially 1 to 8 — very strongly trans- 

 verse ; segment 4 about 7 times and 7 about 5 times as broad 

 as long. Tube very short, broad, 0*5 the length of the head, 

 about 0*8 as broad at base as long and 0'6 as broad at ajiex 

 as at base ; terminal hairs pointed, colourless, and about 0"6 

 the length of the tube. Abdominal setic short, colourless, 

 infundibuliform. 



Ti/pe. Hope Department of Zoology, University Jiuseum, 

 Oxford. 



JIuh. Australia, Upper Mangrove, N. S.W.; 1 c? and 

 larvae from glands on the foliage of the black wattle 

 {Acacia decurrens), Sept. 7th, 1900 {W. W. Froggatt). 



This, the smallest described species of the suborder, is one 

 of an interesting collection of Tubulilerous Thysauoptera 

 (chiefly Gall-causers) made by Mr. Froggatt, ujion which 

 we propose to publish a joint |)aper ; and I have chosen to 

 describe it'now, firstly, that I may name it in Mr. Froggatt's 



