r 



■ ORDER THYSANOPTERA. 449 



m Ranunculus, Sec. in which I find along with it a yellow larva, 



■ like that of Thr. vulgatissima. 



Sp. 'iS. Thi". corymbiferarum. Mas et Fem. 



In the flowers of Corymb'ifercc, with a white border, in'the 

 Botanical garden at Glassnevin, near Dublin. 



Sp. 19. Thr. minutissima. Linn. Fna. S. No. 1028. 

 In company with Thr. vulgatissima, and not rare. 



Sp. 20. Thr. discolor. Mas et Fem. 

 In flowers of Cruciferce, Glassnevin. 



Sp. 21. Thr. livida. 



In flowers of Ulex Kuropcea, very rare- 

 Subs. BB. Elytra linearia, fasciata. 

 Sp. 22. Thr. Primulas. Mas et Fem. 



Distinguished from the rest of this section by its small size and 

 paler tints ; the style of the antennae is filiform and biarticulate. 



Inhabits the flowers of the primrose abundantly. 



Sp. 23. Thr. decora. Nigra, antennarum articulo 2''°. opice, 

 3^\ toto, 4'°. basi, tibiis apice, anticis fere tot is tarsisque 

 pallidis ; antennarum stylo distincte biarticulato. 



The style of the antennae, in this species, is longer than in Thr. 

 vulgatissima, and distinctly biarticulate ; in the remaining species 

 it becomes much shorter. 



Sp. 24. Thr. dispar. Fem. Nigra, antennis fuscis medio 

 indeterminate pallidis ; tibiis tarsisque pallidis, illis basi, 

 anticis angustiusfuscis. Mas. Nigro-fusca, antemtis pedi- 

 busque pallidis, illis basi et apice, femoribus basi, poste- 

 rioribus late infuscatis ; elytrorum rudimentis albidis 

 tantum. 



Style of antennae much less distinctly articulated and shorter than 

 in the last. 

 On Festucajttiitans, and other grasses, in autumn; not rare. 



Sp. 25. Thr. brevicornis. Fem. 



Distinguished by the short antenna? which become thicker towards 



the end. 



Found on Festuca Jluitans ; very rare. 



NO. v. VOL. III. 3 M 



