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



I also possess three poor examples of a smaller Scololhrips 

 which agree well with S. 6-maculatus ; the markings on the 

 wings agree with Hind's description, but the macrochoetaj of 

 the pronotum appear to be longer. These examples were 

 taken in Russia, and it was noted that they were feeding on 

 red mites (a peculiar feature observed in the American 

 species), but I have unfortunately mislaid my Russian corre- 

 spondent's letter, and am unable at present to give fuller data. 



Odontothrips ulicis (Hal.). 



Upon examining some examples of 0. ulicis from Bohemia, 

 ex Uzel's collection, I was struck by several differences 

 readily discernible upon comparison with British examples of 

 ulicis from Ulex spp. There is no means of knowing the 

 flowers from which Uzel's examples were taken, and until 

 further continental material has been studied there can be 

 no certainty that the true 0. ulicis exists outside the British 

 Isles or upon other plants than Ulex spp. It differs from 

 Uzel's species in its larger size, the longer hind tibia?, which 

 has a larger series of longer and stronger spines on the inner 

 margin ; the whole of the antennas is of a very dark brown 

 colour except joint 3, which is of a dirty greyish-yellow, 

 whilst the sixth joint is comparatively longer. The two 

 basal antennal joints in the <$ are grey-brown. I hope to 

 describe the species minutely when monographing the British 

 species of the order. 



Odontothrips uzeli, sp. n. 

 (for Odontothrips ulicis (Uzel), nee Haliday). 



See remarks under above species, 0. ulicis. The antennae, 

 apart from colour, are manifestly shorter and stouter ; the 

 following are the comparative lengths of joints 3 to 8, those 

 for 0. uzeli being more or less approximate : — 



0. uzeli, Bagn. 43 : 38 : 26 : 36 : 5 : 10. 

 0. ulicis (Hal.) 51 : 48 : 34 : 47 : 8 : 13. 



The interocellar bristles are shorter than in ulicis, measuring 

 10 as to 16 in the last-named species. 



Separated from 0. ulicis on material from Bohemia, ex 

 Coll. Uzel, after whom I have pleasure in naming the species. 



Odontothrips ignohilis, sp. n. 



Of about the same size as uzeli, Bagn., and the antennas of 

 similar proportions, the approximate lengths of joints 3 to 8 



