ORDER THYSANOPTERA. 441 



Synoptic View of the Families and Genera. 



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



Gen. I. Phl.eothr.ips. 

 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 last joints of antennae minute and compact. Gen. VI. yEoLOTHRirs. 



Stirps et Fam. — Tubulifera. 



Antenna 8-articulatce : palpi maxillares biarticulati, arii- 

 culol™ . perbrevi: alee avenice membranacea, cruciato — 

 incumbentes : terebra feminas nulla : segmentum ultimum 

 in mare et femina attenuation, tubulosum. — Ambulant lente. 



Gen. I. — Phl/eothrips. 

 Thrips spp. De Geer. Fabr. Geoffr. 



Sect. AA. Ocellis nullis nee alls, 

 Sp. 1. Phi. pedicularia. 



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

 jpints of the antennae and the legs light ochre yellow, the thighs 

 darker. 



Sect. AA. Ocellis 3, alis completis aut abbreviatis. 



Subs. B. Capitis lateribus parallelis. 

 Sp. 2. Phi. aculeata. Fem. 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 tio . toto 

 sequentibus basi, flavo-pallidis ; tibiis basi apiceque, an- 

 ticis totis tarsisque ferrugineis ; femoribus anticis incras- 

 satis ; pollice in utroque sexu distincto. 

 no. v. VOL. III. 3 L 



