ORDER THYSANOPTERA. 441 



Synoptic View of the Families and Genera. 



A. No borer in the female .... Stirps et Fam. I. Tubuliflra. 



Gen. I. PhljEothrips. 

 AA. A 4-valved borer in the female Stirps II. Terebrantia. 



B. Borer curved downwards Fam. II. Stenelytra. 



C. Body reticulate . Gen. II. Heliothrips. 



CC. Body smooth 



D. Abdomen tomentose Gen. III. Sericothrips. 



DD. Body glabrous Gen. IV. Thrips. 



BB. Borer recurved Fam. III. Coleoptrata. 



C. Nine distinct joints in the antennae . . . Gen. V. Melanthrips. 

 CC. Four lastjoints of antennae minute and compact. Gen. VI. i'EoLOTURips. 



Stirps et Fam. — Tubulifera. 



Antennee S-articulata : j^ci^pi maxillares biarticulati, arti- 

 culo 1™°. perbrevi : alcB avenics memhrcmacea, cruciato — 

 incwnbentes : terebra ferainse nulla : segmentum idtimum 

 in mare et femina attenuatum, tubulusum. — Ambulant lente. 



Gen. I. — PhljEothrips. 

 Thrips spp. De Geer. Fabr. Geojfr. 



Sect. AA. OcelUs nullis nee alls, 

 Sp. 1. Phi. pedicularia. 



Chestnut-browia, the end of the abdomen ferruginous; the first three 

 joints of the antennae and the legs h'ght ochre yellow, the thighs 

 darker. 



Sect. AA. Ocellis 3, alls completis ant ahbreviatis. 



Subs. B. Capitis lateribus parallelis. 

 Sp. 2. Phi. aculeata. Fern. Nigra, antennis fere totis, 

 tibiis anticis tarsisque albidis ; femoribus anticis subcequa- 

 libus ; corporis setis fuscis ; elytris limpidis. 



Thrips aculeata. Fabr. Syst. Bhyng. 312.* No. 1. 



Distinguished from the rest by its long head and antennae, slender 

 fore thighs, and the dusky colour of the long hairs. 



Varies (immature ? ) chestnut brown, with pale antennae, shanks, and 

 feet. 



Sp. 3. Phi. Ulmi. Piceo-nigra, antennarum articulo 3^'". toto 

 sequentibus bast, jlavo-palUdis ; tibiis hasi apiceque, afi- 

 ticis totis tarsisque ferrugineis ; fetnoribus anticis incras- 

 satis ; pollice in utroque sexu distincto. 



NO. V. VOL. III. 3 L 



