Mr. R. S. Baguall on new Thysanoptera. 259 



banana-palm, Calatrava, Spain, submitted by Dr. W*. E. 

 (Jollinge. 



Africa, Arusha; 1 ? , Oct. aud Nov. 1905 (G. Katona). 



Heliolhrlps patter so ni, sp. n. 



? . — Length 1*3 mm. 



Head and pterothorax brown, prothorax yellowish grey- 

 brown ; abdomen deep chestnut-brown, excepting the last 

 three segments, which are yellow-brown shaded with grey; 

 legs yellow, fore-femora and tibise and hind-femur lightly 

 tinged with brown, intermediate femora and tibise more 

 deeply shaded brown. Antenna yellowish, basal and apical 

 joints more or less lightly tinged with grey-brown. Fore- 

 wings light, with dark grey-brown bands approximating the 

 third sixth and near tip : basally slightly clouded with 

 smoky-yellow. Hind-wings with median vein brown, lighter 

 in middle. Light-coloured examples with abdomen golden 

 yellow-brown with brown lateral patches. 



Head transverse, about 1*8 times as wide across cheeks 

 (which are arched and wider than across eyes) as long ; 

 distinct collar basal ly. Surface deeply reticulated, with a 

 distinct line at collar and another just behind eyes. Eyes 

 large and coarsely facetted, vertex and space between eyes 

 wide ; ocelli normal, situated on sides and apex of a raised 

 prominence. Antennae about 2'8 times as long as head ; 

 segment 1 subquadrate, 2 broadest of all; 3 and 4 slender, 

 urn-shaped, 3 being more than three times as long as broad ; 

 5 broadly clavate ; 6 broadly fusiform and broadly united to 

 7 ; 8 long and slender, forming a continuation of 7. Relative 

 lengths of joints 3 to 8 as follows: — 23 : 17 : 13 : 6 : 14. 

 Maxillary palpi 2-segmented, apical joint, long and slender. 



Prothorax strongly transverse, more than 2'5 times as 

 broad as long and about 0*75 the length of the head ; sides 

 subparallel, with well-defined angles. Surface not strongly 

 reticulated, more or less regularly but sparsely set with 

 longish and rather stout setae, the longest, viz. the dorso-mid- 

 lateral setae, being about 0'35 the length of the pronotum. 



Pterothorax a little longer than broad, stout; fore-wings 

 with a series of about 20-22 costal spines, upper vein with 

 13-14 and lower vein with 9-11 irregularly set, those on the 

 dark areas darker and stouter. 



Larvae whitish, with head, pronotum, the two basal an- 

 tennal joints, basal joints of legs, and the last two abdominal 

 segments grey-brown. 



