Mr. R. S. Bagiiall on neio Thysanoptera. 411 



Hah. Spain, Zaragosa ; 2 ? s collected (with other inter- 

 esting Thysanoptera) by the well-known neuropterist, Father 

 Navas, S.J., 8. iv. 13. 



Rhopahthrips froggatti, sp. n. 



(^ . — Length about 0"75 mm. 



Apterous ; short and broad. 



Uniform brown, distal third of fore-tibiae and extreme 

 apices of intermediate and hind tibige yellowish-white ; tarsi 

 yellowish marked with brown ; apex of antennal joint 2 aud 

 whole of 3 yellowish, 4 aud o a trifle lighter brown than 

 6 to 8. 



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

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

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

 broad apically, apparently infundibuliform. Antennge short 

 and stoul", about 1*7 times as long as the head, shaped as in 

 B. hiGolor, hut joint 6 distinctly constricted at base forming 

 a short stem. 



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

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

 colourless, siiort, and infundibuliform. Pterotliorax short, 

 transverse, only slightly broader than the prothorax. Legs 

 short and stout ; fore-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, O'O the length of the head, 

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

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

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

 infundibuliform. 



Tijpe. Hope Department of Zoology, University Museum, 

 Oxford. 



Hah. Australia, Upper Mangrove, N. S.W.; 1 S 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 Tubuliferous Thysanoptera 

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

 we propose to publish a joint paper ; and I have chosen to 

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



